When I joined my institution 25 years ago, misoprostol (”Cytotec”) was the default for labor induction.

For those unfamiliar, misoprostol is a synthetic prostaglandin E1 analog - a medication that causes the cervix to soften and the uterus to contract.

It’s FDA-approved for preventing gastric ulcers in patients taking NSAIDs like ibuprofen. It’s not FDA-approved for labor induction, cervical ripening, or any obstetric use whatsoever, yet it became one of the most commonly used drugs in labor and delivery.

Twenty-five micrograms (sometimes 50) vaginally every four hours. Simple. Efficient. No IV pump to program, no continuous rate adjustments, no nurse tied to the bedside watching an oxytocin drip.

Just drop the tablet in the vagina, document it, and come back in four hours.

Just drop the tablet in the vagina, document it, and come back in four hours.

Then I looked at our cesarean section logs. Tachysystole in 34% of inductions PubMed. Nonreassuring fetal heart tracings requiring urgent delivery. Emergency sections at 2 AM for Category 2 and 3 tracings that developed after the second or third dose of misoprostol.

We stopped using misoprostol.

Our cesarean rate for induction dropped.

Our emergency cesarean rate dropped more. Our NICU admission rate for term babies dropped too.

Our neonatologist even complained that he was losing money because admissions had dropped.

And we even published the data in the American Journal of Obstetrics and Gynecology (AJOG) to prove it.

Here’s why that happened.

The Safety Profile Nobody Discusses

When you compare vaginal misoprostol to other induction methods, the incidents of uterine hyperstimulation and tachysystole are significantly higher with misoprostol PubMed. Not marginally higher. Significantly higher.

The numbers: Tachysystole occurs in 24.3% of misoprostol inductions Springer. That’s nearly one in four. In one randomized trial comparing misoprostol to oxytocin, tachysystole occurred in 34.4% of the misoprostol group versus 13.8% in the oxytocin group PubMed.

Think about that. When you choose misoprostol, you’re tripling the risk of tachysystole.

The Number: In studies comparing misoprostol directly to Foley balloon catheters, uterine hyperstimulation was more common with misoprostol, though vaginal delivery rates were higher PubMed Central.

We’re trading safety for speed.

Why Do We Keep Using It?

Because it’s convenient.

From an economic standpoint, misoprostol is inexpensive compared with oxytocin and prostaglandin E2 preparations ScienceDirect.

But there’s another reason nobody says out loud: staffing.

Oxytocin requires continuous monitoring. A nurse at the bedside or nearby, watching the tracing, adjusting the rate every 30 minutes based on contraction pattern and fetal heart rate response. It requires attention. It requires personnel.

Misoprostol? Give it every four hours. The nurse can take care of three other patients. An oxytocin infusion can run unsupervised for many hours without a member of staff checking on its rate or effect on uterine contractions PubMed Central. That’s what makes oxytocin dangerous in understaffed settings.

But misoprostol avoids that risk by creating a different one: misoprostol needs to be regularly administered by a trained member of staff, a factor that forces some kind of regular clinical assessment ScienceDirect.

Regular doesn’t mean continuous. And continuous is what you need when 1 in 3 patients will develop tachysystole.

What Happens When You Stop Using Misoprostol

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Every time these numbers come up, the explanation arrives fast: Black women have more C-sections because of racism.

It is a clean story. It fits what we already believe. And when I hold it against the data, it comes apart — in ways that should bother both sides of the argument.

Start with the fact, because it is real and it is large. In 2024, Black women in the United States were delivered by C-section 37.5 times out of every 100 births. White women, 31 times. The gap does not shrink when you look only at the lowest-risk births — first-time mothers, one baby, head-down, carried to term. There it is still about 31 in 100 for Black women and 26 in 100 for white women. And the gap has grown. In 2016 it was about half as wide. In the 1980s, Black women actually had fewer C-sections than average. A gap that grows over forty years is not written in anyone’s biology.

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Some of it is real medicine

Part of the difference is not bias at all. It is illness.

Black women carry more of nearly every condition that leads to a surgical birth. Fibroids — benign muscle growths in the uterus that can block a normal delivery — appear in more than 80 out of 100 Black women by age 50, against about 70 out of 100 white women, and they roughly double the chance of a C-section.

High blood pressure in pregnancy is more common: about 21 in 100 versus 15 in 100. Obesity, which makes labor harder and longer: 57 in 100 versus 40 in 100. And most sobering, the risk of stillbirth is more than twice as high. A group carrying that much more risk should have more medically needed surgery. That is good care, not prejudice.

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The comfortable rebuttal that also fails

When the illness explanation runs out, the popular answer is the hospital. Black women give birth in a smaller set of hospitals that do more C-sections, so the system sorts them into surgery. The sorting is real. But when researchers ran the experiment on paper — moving Black women to the same hospitals where white women deliver — the gap in low-risk C-sections barely closed. Even insurance, which I have long argued matters more than race for whether a mother survives childbirth, does not explain this one. The gap follows the patient, mostly inside the same buildings.

The test that actually matters

So is it the doctor in the room? One study was built to answer exactly that. Researchers took 726 birth providers and showed them identical fetal monitor strips. The only thing they changed was the patient’s race — Black or white.

The providers chose surgery at the same rate for both.

No bias in the decision that produces most C-sections.

And when women themselves ask for a C-section with no medical reason, Black women ask less often, not more. The loudest version of the story is the one the cleanest evidence supports least.

Where a real driver hides

Here is a cause that does hold up, and it is worth sitting with. For years, the calculator doctors used to predict whether a woman could safely deliver vaginally after a prior C-section had race built into its math. It handed Black women lower odds, which nudged them toward another surgery — even though Black women were more likely to try a vaginal birth and less likely to suffer the complication everyone feared. That was not a cruel doctor. It was a biased equation, used in good faith. It was removed in 2021. That is what a real structural driver looks like: specific, written down, and fixable.

What it means for you

If you are a patient, the lesson is not that your doctor is against you. It is to ask what your C-section is actually for. Ask about your own risks — your blood pressure, your fibroids, your blood sugar. And if you have had a C-section before, ask whether a vaginal birth is still on the table, because for years the tool that answered that question was quietly wrong.

My Take

The higher Black C-section rate is not bedside racism — the experiment says no, and women’s own choices point the other way. It is not simple biology — the gap grew, and some hospitals erase it completely. It is three things stacked together: real illness that calls for real surgery, one broken tool we have finally started to fix, and a leftover gap, about half of it, that honest researchers cannot yet explain. “We cannot explain it yet” is not the same as “racism.” One is an excuse to stop looking. The other is an instruction to keep going. We should keep going.

A note on how this was researched

I researched this piece with an AI — Claude, running its Fable 5 model — and then checked every number against the original sources: the CDC’s birth records and the published studies, each with a real citation. I use these tools the way Daniel Kahneman taught me to treat my own judgment: as something to check, never to trust on faith. The machine finds and organizes. The positions are mine.

Bottom line

Before you repeat the easy answer, look at what the data actually say. Share this with a colleague who still believes the gap has one simple cause. ObGyn Intelligence is free because the evidence should travel. If you want to keep it independent, a paid subscription does exactly that.

References

1. Osterman MJK, Hamilton BE, Martin JA, Driscoll AK, Valenzuela CP. Births: final data for 2024. Natl Vital Stat Rep. 2026;75(2).

2. Martin JA, Hamilton BE, Osterman MJK, Driscoll AK, Drake P. Births: final data for 2016. Natl Vital Stat Rep. 2018;67(1).

3. Main EK, Chang SC, Tucker CM, Sakowski C, Leonard SA, Rosenstein MG. Hospital-level variation in racial disparities in low-risk nulliparous cesarean delivery rates. Am J Obstet Gynecol MFM. 2023;5(11):101145. PMID: 37648109.

4. Baird DD, Dunson DB, Hill MC, Cousins D, Schectman JM. High cumulative incidence of uterine leiomyoma in black and white women: ultrasound evidence. Am J Obstet Gynecol. 2003;188(1):100-107. PMID: 12548202.

5. Li H, Hu Z, Fan Y, Hao Y. The influence of uterine fibroids on adverse outcomes in pregnant women: a meta-analysis. BMC Pregnancy Childbirth. 2024;24:345. DOI: 10.1186/s12884-024-06545-5.

6. Ford ND, Cox S, Ko JY, et al. Hypertensive disorders in pregnancy and mortality at delivery hospitalization — United States, 2017–2019. MMWR Morb Mortal Wkly Rep. 2022;71(17):585-591.

7. Hales CM, Carroll MD, Fryar CD, Ogden CL. Prevalence of obesity and severe obesity among adults: United States, 2017–2018. NCHS Data Brief No. 360; 2020.

8. Pruitt SM, Hoyert DL, Anderson KN, et al. Racial and ethnic disparities in fetal deaths — United States, 2015–2017. MMWR Morb Mortal Wkly Rep. 2020;69(37):1277-1282. PMID: 32941410.

9. Bane S, Mujahid MS, Kan P, Main EK, Carmichael SL. Can birth hospital explain racial/ethnic differences in cesarean birth among low-risk births? An analysis of California data, 2007-2018. J Racial Ethn Health Disparities. 2026;13(4):2893-2904. PMID: 40327292.

10. Aron DC, Gordon HS, DiGiuseppe DL, Harper DL, Rosenthal GE. Variations in risk-adjusted cesarean delivery rates according to race and health insurance. Med Care. 2000;38(1):35-44. PMID: 10630718.

11. Edwards SE, Class QA, Ford CE, Alexander TA, Fleisher JD. Racial bias in cesarean decision-making. Am J Obstet Gynecol MFM. 2023;5(6):100927. PMID: 36921720.

12. Swain CA, Anderson MC, Shirazi A, Torrente S, Okwandu IC. Racial and ethnic trends in cesarean delivery on maternal request. J Racial Ethn Health Disparities. 2026. PMID: 39775743.

13. Grobman WA, Sandoval G, Rice MM, et al. Prediction of vaginal birth after cesarean delivery in term gestations: a calculator without race and ethnicity. Am J Obstet Gynecol. 2021;225(6):664.e1-664.e7. PMID: 34043983.

14. Cahill AG, Stamilio DM, Odibo AO, et al. Racial disparity in the success and complications of vaginal birth after cesarean delivery. Obstet Gynecol. 2008;111(3):654-658. PMID: 18310368.

Her labor had not failed. The chart had.

For seven decades, a single graphical tool has dictated the pace at which women are expected to dilate, when doctors should intervene, and when a labor gets labeled “abnormal.” That tool is the partogram. And the curve it was built on was drawn by hand, by one resident, on one night, from observations of 100 women.

It is time to understand what a partogram actually is, what it can and cannot tell you, and why the original curve that defined “normal” labor was neither normal nor accurate.

What the Word Means

The word partograph is a hybrid. It combines the Latin parere, meaning “to give birth,” with the Greek graphein, meaning “to write” or “to record.” A partogram (using the Greek suffix -gramma, meaning “something written or drawn”) is the document itself. In practice, the two terms are used interchangeably.

The literal meaning: a written record of birth. aka labor curve.

That sounds straightforward. But what gets written, and the lines drawn on that record to define “normal,” have shaped obstetric practice more profoundly than almost any clinical trial.

What a Partogram/Partograph Actually Is

A partogram is a pre-printed, single-page form used during labor. It provides a graphical record of key observations plotted against time. On most versions, the chart tracks:

Fetal condition: heart rate, color of amniotic fluid, molding of the fetal skull.

Maternal condition: pulse, blood pressure, temperature, urine output.

Labor progress: cervical dilation (in centimeters), descent of the baby’s head (measured as “station”), and the frequency and duration of contractions.

The centerpiece of the partogram is a graph where cervical dilation is plotted on the vertical axis and time on the horizontal axis. As labor progresses and the cervix opens, dots are placed on the chart. The pattern those dots form is compared against reference lines to determine whether labor is progressing “normally.”

Two critical lines appear on the traditional partogram. The alert line represents the slowest acceptable rate of progress. If a woman’s dilation curve crosses this line, it signals that labor may be slower than expected. The action line, placed two to four hours to the right of the alert line, signals that intervention should be considered.

The question that matters: who decided where those lines go?

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The Stages and Phases of Labor

Before understanding the partogram’s controversies, you need to understand what it is supposed to track.

Labor is divided into three stages.

The first stage begins with the onset of regular contractions and ends when the cervix is fully dilated at 10 centimeters. This is the longest stage, and it is subdivided into two phases.

The latent phase is early labor. Contractions are becoming regular, and the cervix is slowly thinning (effacing) and beginning to open. Progress during this phase is slow and variable. Some women spend hours in latent labor. Others barely notice it. In the traditional framework, the latent phase extends from 0 to about 3 or 4 centimeters.

The active phase is when things are supposed to accelerate. Contractions become stronger, longer, and closer together. The cervix dilates more rapidly. Traditionally, the active phase was thought to begin at about 4 centimeters of dilation. Modern evidence suggests it may not truly begin until 6 centimeters.

The deceleration phase was Friedman's term for a supposed slowing of cervical dilation in the final centimeters before full dilation, as if the cervix shifted gears and opened more gradually from about 8 or 9 centimeters to 10. The Consortium data showed no such phase at the end of the first stage.

The second stage begins at full dilation (10 centimeters) and ends with the birth of the baby. This is the pushing stage.

The third stage begins after the baby is born and ends with delivery of the placenta.

The partogram focuses almost entirely on the first stage, particularly the active phase. And the expectations for how fast that phase should progress were, for over half a century, defined by one man’s observations.

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The Friedman Curve: One Night, One Resident, One Curve

In 1954, Emanuel Friedman was a young obstetric resident at Columbia University in New Tork. Dr. Virginia Apgar, the attending anesthesiologist (and creator of the Apgar score), asked him to study the effect of caudal anesthesia on labor. Friedman spent a night recording cervical dilation and fetal station measurements on a series of laboring women.

By morning, he had plotted their cervical dilation against time and observed that the resulting graph formed an S-shaped (sigmoid) curve. He published his findings based on observations of approximately 100 women, and the “Friedman curve” was born.

From these initial observations, Friedman described the first stage of labor as having distinct components: a latent phase, an acceleration phase, a phase of maximum slope (the steepest part of the active phase), and a deceleration phase near the end, as the cervix approached full dilation.

He established benchmarks that became gospel. The active phase was said to begin at 4 centimeters. The minimum acceptable rate of cervical dilation in the active phase was 1.2 centimeters per hour for first-time mothers and 1.5 centimeters per hour for women who had given birth before. The 95th percentile for the duration of the latent phase was 20 hours for first-time mothers and 14 hours for experienced mothers.

These numbers shaped textbooks, training programs, and clinical protocols worldwide. They became the basis for the alert and action lines on partograms. They defined when a labor was “too slow.” And for decades, labors that did not meet these benchmarks were labeled as having “protraction” or “arrest” disorders, often leading to interventions including cesarean delivery.

There was one significant problem. Friedman drew the original curve by hand. No modern statistical model was used. And the curve he described, particularly the deceleration phase near full dilation, may never have existed at all.

Where the Curve Went Wrong

In 2002 and then more definitively in 2010, Dr. Jun Zhang and colleagues from the Consortium on Safe Labor examined labor patterns in a dramatically larger dataset: over 62,000 women across 19 hospitals in the United States, all of whom had spontaneous labor, vertex presentation, and normal neonatal outcomes.

Their findings contradicted Friedman’s curve in several critical ways.

The active phase starts later than 4 centimeters. Zhang’s data showed that the transition from latent to active labor occurred at approximately 6 centimeters, not 4 centimeters. Before 6 centimeters, labor progressed slowly for both first-time and experienced mothers at a similar rate.

Normal labor is much slower than Friedman described. The 95th percentile for progression from 4 to 5 centimeters was over 6 hours. From 5 to 6 centimeters, it could take more than 3 hours. These durations would have triggered “failure to progress” under Friedman’s criteria, yet these women all delivered vaginally with healthy babies.

The deceleration phase probably does not exist. The Consortium data showed no deceleration phase at the end of the first stage. This was a significant finding. Forcing a deceleration phase into the model, as Friedman had done, artificially steepened the curve in the active phase, making the expected rate of dilation between 4 and 6 centimeters faster than it actually is for most women.

Labor progress is not one-size-fits-all. Subsequent studies have shown that labor curves are affected by maternal obesity, age, hypertension, gestational age, fetal size, and even fetal sex. A single curve cannot represent the enormous variability in how individual women labor.

The implications were staggering. For decades, the 1 centimeter per hour rule had been applied starting at 4 centimeters. Women who were in what we now understand to be the normal latent phase were being treated as though they were in active labor and falling behind. They were being augmented with oxytocin, subjected to amniotomy, and delivered by cesarean, not because their labors were abnormal, but because the standard against which they were measured was wrong.

What ACOG Changed

In response to this evidence, the American College of Obstetricians and Gynecologists issued updated guidance. The most recent Clinical Practice Guideline, published in January 2024, makes several key recommendations.

The active phase of labor should be defined as beginning at 6 centimeters of dilation, not 4 centimeters.

Active phase arrest should not be diagnosed before 6 centimeters. After 6 centimeters, arrest requires no cervical change despite ruptured membranes and either 4 hours of adequate contractions or 6 hours of oxytocin augmentation with inadequate contractions.

A protracted active phase can be conservatively defined as less than 1 centimeter of cervical change in 2 hours.

The latent phase has wide normal variation and, by itself, slow progress in the latent phase is not an indication for cesarean delivery.

These changes represent a fundamental shift. The question is no longer simply “is this labor following the Friedman curve?” It is “does the evidence support intervening at this point?”

The WHO Moves On

In 2020, the World Health Organization took the next step. After decades of recommending the traditional partograph with alert and action lines based on the 1 centimeter per hour rule, the WHO launched the Labour Care Guide (LCG), a redesigned monitoring tool intended to replace the classic partogram.

The LCG defines active labor as beginning at 5 centimeters of dilation. It sets the minimum acceptable rate of dilation at 0.5 centimeters per hour rather than 1 centimeter per hour. It removes the alert and action lines entirely. And it adds sections for supportive care, shared decision-making, and respectful maternity care, elements that no partogram ever included.

A 2024 pilot trial in India published in Nature Medicine provided preliminary evidence that the LCG may help reduce unnecessary cesarean deliveries when combined with implementation support and provider training.

The shift from partograph to LCG is not just a technical update. It is a philosophical one. The traditional partograph asked: is this labor keeping pace with a predetermined curve? The Labour Care Guide asks: are this mother and this baby safe, and is progress being made?

What You Should Know

If you are pregnant or planning to be, here is what this means for you.

There is no universal clock on labor. Progress from 4 to 6 centimeters can be very slow and still be completely normal. If you are told your labor is “stalled” before you reach 6 centimeters, ask what criteria are being used to make that determination.

“Failure to progress” is the single most common reason for a first cesarean in the United States. Many of these diagnoses may have been based on outdated expectations. Ask your provider whether they use the updated ACOG definitions for active phase arrest.

The partogram is a monitoring tool, not a decision-making tool. No labor should be managed by lines on a chart alone. Clinical decisions should incorporate the whole picture: fetal heart rate patterns, maternal well-being, the position and descent of the baby, and the pattern of change over time.

Ask your team what standard they follow. The Friedman curve placed the start of active labor at 4 centimeters and demanded 1.2 centimeters per hour. Modern evidence places active labor at 6 centimeters with much wider variation in acceptable dilation rates. These are not small differences. They determine when your labor gets called “abnormal.”

A written record of birth should describe what is happening. It should not prescribe what must happen, or how fast. For too long, a hand-drawn curve from 1954 did exactly that. The evidence now tells a different story, and it is one that trusts women’s bodies more than any line on a chart.

References

1. Friedman EA. The graphic analysis of labor. Am J Obstet Gynecol. 1954;68(6):1568-75.

2. Friedman EA. Primigravid labor: a graphicostatistical analysis. Obstet Gynecol. 1955;6(6):567-89.

3. Zhang J, Landy HJ, Branch DW, et al. Contemporary patterns of spontaneous labor with normal neonatal outcomes. Obstet Gynecol. 2010;116(6):1281-87.

4. Zhang J, Troendle JF, Yancey MK. Reassessing the labor curve in nulliparous women. Am J Obstet Gynecol. 2002;187(4):824-28.

5. Hamilton EF, Romero R. The evolution of the labor curve and its implications for clinical practice. Am J Obstet Gynecol. 2023;228(5 Suppl):S1050-S1062.

6. First and Second Stage Labor Management. ACOG Clinical Practice Guideline No. 8. Obstet Gynecol. 2024;143(1):144-62.

7. Philpott RH, Castle WM. Cervicographs in the management of labour in primigravidae. J Obstet Gynaecol Br Commonw. 1972;79:592-98.

8. Oladapo OT, Diaz V, Bonet M, et al. Cervical dilatation patterns of ‘low-risk’ women with spontaneous labour and normal perinatal outcomes: a systematic review. BJOG. 2018;125(8):944-54.

9. Vogel JP, Pujar Y, Vernekar SS, et al. Effects of the WHO labour care guide on cesarean section in India: a pragmatic, stepped-wedge, cluster-randomized pilot trial. Nat Med. 2024;30:463-69.

10. WHO Labour Care Guide: User’s Manual. World Health Organization; 2020.

11. Lavender T, Cuthbert A, Smyth RM. Effect of partograph use on outcomes for women in spontaneous labour at term and their babies. Cochrane Database Syst Rev. 2018;(8):CD005461.

12. Ubom AE, et al. FIGO position statement on the use of the WHO labor care guide versus the partograph. Int J Gynecol Obstet. 2025.

The Five-Page Birth Plan

She was 34, expecting her first baby, and she arrived at her 36-week visit with a birth plan. Five pages. Dim lights. Her own playlist. No epidural. Intermittent monitoring only. Immediate skin to skin. Delayed cord clamping. Her partner cutting the cord. It was thoughtful, well researched, and beautifully formatted.

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Three weeks later, at 6 centimeters, her baby’s heart rate dropped and did not recover. Within minutes she was in the operating room. Healthy baby. Healthy mother. And a cesarean that appeared nowhere in those five pages.

At her postpartum visit she said something I have heard many times in 50 years of obstetrics: “I feel like I failed.”

She did not fail. Her plan did. It planned for only one birth.

What a Birth Plan Is, and What It Is Not

A birth plan is a communication tool. It tells your team what matters to you: pain relief or no pain relief, who is in the room, how you want to hold your baby in the first hour. Used this way, it is valuable. It starts conversations that should happen long before labor does.

Here is what a birth plan is not. It is not a contract. It is not a guarantee. And it is not something your baby has read.

Labor is one of the least predictable events in medicine. A woman can eat well, exercise, take every class, hire a doula, and choose her team carefully, and still need an intervention she never wanted. That is not a flaw in her preparation or in her body. It is biology.

What the Numbers Say

In 2022, there were about 3.7 million births in the United States, and about 32 in every 100 ended in a cesarean (1). That is roughly 1.2 million cesareans in a single year. Among first-time mothers at term with one head-down baby, the very group most likely to write a detailed birth plan, about 26 in 100 delivered by cesarean (1). And roughly 3 in 10 labors are now induced rather than starting on their own (1).

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Put plainly: if you are having your first baby, the chance that your birth will include a cesarean is about 1 in 4. The chance that it will include an induction, an epidural you had not planned on, or monitoring you hoped to avoid is considerably higher. These are not rare detours. They are common destinations.

No woman should walk into labor without knowing this. Yet many birth plans are written as if the unplanned outcomes happen only to other people.

The Conversation Belongs in the Office, Not the Operating Room

Frank Chervenak and I have spent years writing about preventive ethics (2). The idea is simple: have the hard conversations before the crisis, not during it.

Informed consent at 6 centimeters, with a worrying heart tracing on the monitor, is not truly informed consent. You are in pain, frightened, and deciding under pressure. The time to learn what a cesarean involves, why an induction might be recommended, and what happens if your baby needs the intensive care nursery is at a prenatal visit, in a chair, with time to ask questions.

Your doctor or midwife carries responsibility here too. A clinician who nods politely at an unrealistic plan and says nothing is not respecting your autonomy. He is abandoning you to be surprised later. Respect means telling you the truth: here is what you want, here is what commonly happens, and here is how we will handle it together if your birth takes a different road.

How to Prepare for Both Births

Write your Plan A. Then write your Plan B with the same care.

Ask your team: If I need an induction, how do you do it, and what should I expect? If I need a cesarean, can my partner stay with me? Can I have skin to skin in the operating room? Can the drape be lowered so I can see my baby born? If my baby needs extra help, who goes with the baby and who stays with me?

These questions cost nothing, and they change everything. Women who have thought through Plan B tell me the same thing afterwards: it did not make the cesarean welcome, but it made it theirs. The difference between “this was done to me” and “this was a decision I understood” is enormous, and it lasts far longer than the hospital stay.

And ask one more question before any of the others: Can this place handle the birth I may need? A birth plan written for a setting without 24-hour anesthesia, an operating room down the hall, and a blood bank is a plan that only works if nothing goes wrong. The most consequential line of any birth plan is not the lighting or the playlist. It is the address at the top.

What It Means for You

If you are pregnant, write your birth plan. I mean that sincerely. Write down what matters to you, keep it short enough that a busy nurse can actually read it, and discuss every line with your team well before labor. Then add a second page and title it “If things change.” Put your cesarean preferences there. Your induction questions. Your questions about the nursery. Hand both pages to your team and ask them to be honest about what is realistic where you plan to deliver.

If your clinician tells you a preference is unrealistic, that is not paternalism. That is the appointment doing its job.

My Take

After more than 10,000 deliveries, I can tell you that births which go exactly according to plan are a minority, and the mothers who cope best are almost never the ones with the most detailed documents. They are the ones who prepared for more than one outcome.

Flexibility is not failure. A cesarean after a well-understood, well-discussed change of course is not a defeat. The measure of a good birth is not how closely it matched a document written at 36 weeks. It is a healthy mother, a healthy baby, and a woman who understood her choices at every step.

So prepare for the birth you want. Truly. Advocate for it, write it down, and find a team that respects it. Then prepare, with the same seriousness, for the birth you may need. The first plan honors your hopes. The second one honors your safety. You deserve both.

Bottom Line

A birth plan with only one plan in it is half a plan.

Write Plan A with hope, write Plan B with honesty, and choose a place that can deliver both.

If you know someone who is pregnant, send this to her. And if you want evidence over reassurance every week, subscribe to ObGyn Intelligence. The plan here is simple: the data, plainly told.

PROTIP:
Here is an extensive prompt to use to help with interpreting a birth plan.

INSTRUCTIONS

Copy/paste this prompt and attach a patient’s birth plan to the AI:

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Summary

A post on Reddit r/pregnant asked a simple question: what is one pregnancy symptom no one talks about? The thread drew 394 upvotes and 1,200 comments. That is not a forum thread. That is a symptom registry. The top answers were not morning sickness or swollen ankles. They were pregnancy rhinitis, carpal tunnel syndrome, vivid nightmares, explosive gas, skin tags, bleeding gums, excessive vaginal discharge, and prenatal depression. Many of these are real, well-documented physiologic phenomena. Almost none of them appear in standard prenatal education. The volume and consistency of these reports, across hundreds of independent commenters, suggests a systematic gap between what obstetric care discusses and what pregnant patients actually experience. That gap has consequences.

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Summary

A user in r/beyondthebump posted a deceptively simple question:

what pregnancy symptoms did nobody warn you about?

The thread, which drew over 1,400 comments before archiving, became a strikingly honest catalog of physiologic change that standard prenatal education leaves out entirely.

The poster’s own answer -- green stools alerting her to a second pregnancy -- set the tone.

What followed was a crowdsourced inventory of mucous membranes, tendons, nerves, hormones, and bodily fluids that textbooks acknowledge but no one apparently mentions at prenatal visits. The sheer volume of the response suggests not a few unlucky outliers but a systematic failure of prenatal counseling to prepare people for their own bodies. Symptoms ranged from benign nuisances to conditions -- intrahepatic cholestasis of pregnancy, hyperemesis gravidarum, symptomatic carpal tunnel -- that can affect fetal or maternal outcomes. Many women described being blindsided by their own physiology, turning to Google in a panic before finding out from strangers on the internet that what they were experiencing was normal.

The tools.obmd.com Pregnancy Symptom Checker

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The logic sounds plausible. But what does the evidence actually show?

The Fertility Claims

Let’s start with what appears to support the narrative. A 2022 review in Nutrients concluded that adherence to “anti-inflammatory diets” improves fertility and assisted reproductive technology (ART) success. Headlines followed. The problem? Read beyond the abstract and the picture gets complicated.

A 2024 NHANES analysis found women eating pro-inflammatory diets had 61% higher odds of infertility. Another cross-sectional study reported an 86% increased risk. Sounds alarming—until you realize these are observational studies that can’t establish causation. Women who eat processed food diets also differ in dozens of other ways: income, stress, sleep, BMI, smoking, alcohol use. The diet may be a marker, not a cause.

What about IVF? Here the evidence fractures. A Greek prospective cohort of 357 women found Mediterranean diet adherence associated with higher clinical pregnancy rates. But an Iranian study of 144 IVF patients found no association between dietary inflammatory index (DII) scores and any treatment outcome. An Italian study of 474 women? No association with pregnancy, live birth, oocyte yield, or embryo quality. A Dutch cohort? Also no significant associations.

A 2023 systematic review examining female dietary patterns and IVF outcomes concluded there was “insufficient evidence to support recommending any single dietary pattern for the purpose of improving pregnancy or live birth rates” in women undergoing IVF.

The honest summary: some observational studies show associations; others don’t. No randomized trials have demonstrated that changing diet from “pro-inflammatory” to “anti-inflammatory” improves pregnancy rates in infertile women.

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The new EAT-Lancet report says eat more plants and less red meat. The new US dietary guidelines say “eat real food.” Both are right. But pregnant women need to read the fine print.

In January 2026, US Health Secretary Robert F. Kennedy Jr. released new dietary guidelines urging Americans to ditch ultra-processed foods and eat more protein, fruits, and vegetables. Around the same time, Earth-systems scientist Johan Rockström published a commentary in Nature summarizing the 2025 EAT-Lancet Commission’s updated Planetary Health Diet. His message: what you eat affects not just your health, but the planet’s. The commission found that shifting to their recommended diet could prevent up to 15 million premature deaths per year.

Neither mentioned pregnancy specifically. And that’s a problem—because the same dietary pattern that benefits most adults may need important modifications during gestation.

The Planetary Health Diet is not a vegan diet

Let’s start with what the EAT-Lancet Commission actually recommends. The Planetary Health Diet derives about 65 percent of daily calories from vegetables, fruits, nuts, legumes, and whole grains. But it explicitly includes animal protein: roughly one portion of red meat weekly, two modest servings of poultry, two servings of fish or shellfish, moderate dairy, and eggs. About 14 percent of daily energy comes from protein.

This is a “flexitarian diet”—plant-rich, but not plant-exclusive. And that distinction matters enormously in pregnancy.

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A television crew came to film on our labor and delivery unit.

They had cameras. They had microphones. They had, I assume, a vision of what a hospital birth looks like: the shouting, the sprinting, the near-misses, the dramatic save. The kind of footage that earns a time slot.

What they found instead was a quiet unit running well.

The only noise was that of healthy babies crying.

A nurse was adjusting pitocin, watching the contraction pattern, keeping the uterus from doing too much at once.

Nobody placed misoprostol, so no tachysystole, fetal bradycardia, and drama.

Another was reading a tracing, noting a variable deceleration, repositioning the patient, watching it resolve.

A resident was reviewing a cervical exam and documenting her findings.

An attending was on the phone with a patient who had called from home.

Nobody was running. Nobody was shouting. There was no dramatic rescue, no split-second intervention, no moment where one person’s heroics pulled a life back from the edge.

There was just protocol. Followed.

Quiet huddles.

The crew stayed for a few hours, filmed some hallways, asked a few polite questions, and left. The producer met with me afterwards asking me what was “wrong”. He wanted action, drama, bad outcomes, blood on the floors. I told him to go somewhere else. No apology.

They went to another hospital.

Our administration was disappointed (THAT IS THE TRUTH).

We had not given them what they came for. I was not disappointed.

At the other place a resident was filmed behaving inappropriately. When the documentary showed it, she was fired.

A patient filed a malpractice suit in that other hospital because what was shown in the documentary.

What the cameras could not film was what was actually happening. They could not film the tachysystole that was caught before it became a category III tracing.

They could not film the baby who did not have a shoulder dystocia because the nurse recognized the warning signs in time. They could not film the hemorrhage that did not happen because someone had already ordered the oxytocin before it was needed.

The absence of drama is not the absence of work.

It is the proof that the work was done.

Television needs the emergency. It needs the moment when something goes wrong and a human being fixes it with their hands and their knowledge and their nerve. That is the story it knows how to tell. I understand this. It is not a criticism of television.

But it is worth noticing what that story leaves out.

It leaves out the fact that the best outcomes in obstetrics are almost always invisible. The baby who was never in danger because the pitocin was titrated carefully. The patient who did not need an emergency cesarean because someone was watching her tracing closely enough, early enough, to avoid the sequence of events that leads to one. The postpartum hemorrhage controlled in the first minute because the team had already prepared.

Good obstetric care looks boring from the outside. It is supposed to. I want it to be that way. We all should.

The goal of a well-run labor and delivery unit is not to be ready for the emergency. It is to make the emergency less likely to happen in the first place.

That is called preventive ethics.

Our administration wanted the cameras. I understand that too. Visibility matters. A hospital that appears in a documentary attracts patients, attracts donors, attracts residents who want to train somewhere with a name. These are not trivial things. Institutional survival depends on them.

But I kept thinking about what it would mean if a unit’s best argument for being on television was that things go wrong there dramatically and frequently enough to fill an episode.

The crew found another hospital.

I hope the patients at that hospital are doing well.

I hope ours are too. Quietly.

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In the long arc of obstetric history, pain relief in labor has been both a scientific pursuit and a moral battleground. Each innovation—ether, chloroform, twilight sleep, epidurals—was not simply a new drug or technique, but a reflection of how society viewed women’s suffering, autonomy, and control over childbirth. The history of analgesia in obstetrics reveals less about technology than about the shifting boundaries of compassion and power.

When ether and chloroform entered obstetrics in the mid-19th century, they met resistance from both physicians and clergy who argued that labor pain was divinely ordained. Queen Victoria’s endorsement of chloroform during the birth of Prince Leopold in 1853 silenced much of the opposition and began the medicalization of obstetric pain. Yet the relief of pain came with an implicit trade: women gained comfort, but ceded part of their agency to the growing authority of hospital-based obstetrics.

By the early 20th century, the pendulum swung further with “twilight sleep”—a combination of morphine and scopolamine introduced in Freiburg, Germany, and popularized in the United States. It promised a “painless birth” through drug-induced amnesia, but the reality was darker. Women thrashed, hallucinated, and required restraints; babies were sometimes born depressed or apneic. The method persisted because it appealed to cultural ideals of female passivity and medical control. What was marketed as liberation became another form of silencing.

The postwar decades brought a counterreaction. The natural childbirth movement, led by Grantly Dick-Read and later Lamaze and Bradley, reframed labor pain as a natural, purposeful process rather than pathology. But its moral undertones—equating stoicism with virtue—risked shaming those who sought pharmacologic relief. By the 1970s, the introduction of safe regional anesthesia, particularly epidurals, finally allowed women to choose relief without sacrificing consciousness or safety. For the first time, obstetric analgesia could align with autonomy rather than undermine it.

Today, epidurals are the gold standard of obstetric pain management, used by about 70 percent of laboring women in developed countries. They offer flexibility, safety, and patient control through demand dosing. Yet the debate has evolved again. Critics question whether widespread epidural use contributes to longer labors, higher intervention rates, or a diminished sense of accomplishment. Others see it as the culmination of a centuries-long ethical correction: a woman’s right to define her own childbirth experience.

The ethical cornerstone of modern obstetrics is choice, and repect for patient autonomy—but choice must be informed.

Every woman deserves the option of proper analgesia, including regional anesthesia when medically appropriate. Informed consent also means acknowledging when that option does not exist. Women choosing home birth, for example, must understand that epidural or spinal analgesia are the safest option to relieve pain but they cannot be safely administered outside a hospital. In fact, a large percentage of transfers from home to the hospital are required if pain becomes intolerable or complications arise. Ethically, autonomy is inseparable from accurate disclosure and full consent. The right to choose a birth setting includes the right to know what is, and is not, available there. Respecting that balance is as critical as respecting the choice itself.

Artificial intelligence may soon influence this conversation. Algorithms analyzing real-time hemodynamic data and pain scores could optimize epidural dosing, predict hypotension, and tailor care to each patient’s physiology. But even with A.I. in the mix, the question remains the same: how do we balance safety, autonomy, and the lived experience of birth? Technology can quantify pain, but it cannot define meaning.

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The ethical throughline from ether to epidurals is clear. Every advance has required obstetrics to reexamine its moral contract with women—to relieve suffering without erasing agency. Twilight sleep failed not because it was ineffective, but because it treated women as objects of care rather than subjects of choice. Modern epidurals, used with informed consent and shared decision-making, embody the opposite: relief chosen, not imposed.

The next frontier may blend A.I. analytics with personalized pain management, but the goal should remain the same as Queen Victoria’s quiet request more than 170 years ago: mercy without condescension. Labor pain is universal, but how we respond to it defines the humanity of our profession.

When a scientific conclusion blurs more than it clarifies, clinicians are left guessing—and patients are left uninformed. The new JAMA Network Open study by Osmundson et al. on antibiotic safety in early pregnancy ends with a puzzling statement: “Our results support the current ACOG recommendation for caution in using TMP-SMX during the first trimester but do not support current recommendations to limit nitrofurantoin use.”
This large U.S. cohort of more than 71,000 first-trimester antibiotic exposures offers some of the clearest data yet on congenital malformation risks. Trimethoprim-sulfamethoxazole (TMP-SMX) exposure was linked to a 35% higher relative risk of any malformation and a two-fold risk of severe cardiac defects and cleft lip or palate compared with β-lactams. Nitrofurantoin and fluoroquinolones showed no statistically significant excess risk.

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The design was strong: an active comparator, propensity-weighted modeling, and sensitivity analyses that largely confirmed the signal for TMP-SMX. Still, the authors’ conclusion language deserves scrutiny. What does it mean to “support caution” for one drug but to “not support limits” for another? Both “caution” and “limit” are undefined, non-quantitative, and subject to interpretation. ACOG itself avoids clarity by using both verbs without operational thresholds. In medicine, such rhetorical ambiguity becomes policy camouflage: enough to imply safety without accepting liability.

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If TMP-SMX doubles the risk of certain malformations, then “caution” is not an adequate descriptor—it implies a watchful eye, not a warning.

Conversely, stating that the data “do not support limiting nitrofurantoin” risks overinterpretation. A relative risk of 1.12 (95% CI 1.00–1.26) hardly justifies a safety endorsement; it merely fails to reach conventional statistical significance. The absence of proof of harm is not proof of safety. When the upper confidence interval includes a 26% increase, clinical humility—not reassurance—is warranted.

The underlying issue is not just semantics but ethics. When guideline committees adopt deliberately soft verbs, they shift risk communication from the institution to the individual clinician. A provider who “used with caution” can still be accused of negligence if harm occurs, while an organization that “recommended caution” remains shielded. This linguistic fog is the opposite of evidence translation—it is evidence dilution.

ACOG’s own 2017 opinion (“avoid when possible”) was already an exercise in hedging. Osmundson’s data could have clarified practice by proposing concrete thresholds: for example, to avoid TMP-SMX entirely before 10 weeks or to favor β-lactams whenever culture sensitivity allows. Instead, we are left with the same verbs that started the problem—caution and limit—two words that sound protective but are scientifically indistinguishable.

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Guidelines should translate data into action, not adjectives. When every recommendation hides behind flexible language, clinical responsibility migrates from the collective to the individual. The ethical question is simple: If “caution” cannot be defined, is it really guidance—or just a disclaimer?

Preeclampsia remains one of obstetrics’ most preventable causes of maternal death, yet it still accounts for roughly one in six maternal fatalities worldwide. We have high-resolution ultrasound, continuous fetal monitoring, and advanced intensive care units, but the tool that could save the most lives fits inside a kitchen drawer. A home blood pressure monitor, paired with thoughtful A.I.-driven interpretation, might be the most underused weapon in the fight against hypertensive disorders of pregnancy.

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Hospital-based technology is often reactive, not preventive. By the time a woman arrives with headache, swelling, or visual changes, endothelial dysfunction has been progressing for weeks. A.I. systems trained on longitudinal home readings could change this. They can detect subtle patterns—minute diurnal shifts, emerging variability, or trajectory changes in systolic trends—that the human eye might overlook. Just as continuous glucose monitors revolutionized diabetes care, connected blood pressure devices can now feed real-time data into algorithms designed to identify early warning signs of preeclampsia long before symptoms appear.

The clinical value of home monitoring is already supported by evidence. The WHO and NICE endorse it for high-risk pregnancies, and studies show that patients who monitor at home are diagnosed earlier and have fewer hospitalizations. In an era when hypertension-related morbidity is rising even among low-risk women, universal home BP monitoring could become the new prenatal standard, not the exception. The devices are inexpensive, reliable, and simple to use. What remains is the will—and the workflow—to integrate them into routine care.

Every pregnant woman should be offered a validated, automatic upper-arm blood pressure monitor as part of prenatal care—just as thermometers and scales are standard household tools. Patients can be taught how to measure correctly: sit upright with both feet flat on the floor, rest for at least five minutes, and use the same arm each time. The cuff should be at heart level, snug but not tight, with two readings taken one minute apart. Recording results in a notebook or app allows both patient and provider to follow trends rather than isolated numbers. Consistency and calmness matter more than perfection.

Knowing when to act is crucial. If systolic pressure is 140 mmHg or higher, or diastolic 90 mmHg or higher, patients should repeat the measurement after 15 minutes of rest. If the reading remains elevated or is accompanied by headache, visual disturbances, right upper quadrant pain, shortness of breath, or sudden swelling, they should immediately contact their obstetric provider or the nearest labor and delivery unit. Readings above 160/110 mmHg warrant immediate evaluation. Patients should be told that they are not “bothering” anyone—timely reporting is preventive medicine, not overreaction. This clarity transforms anxiety into empowerment.

Artificial intelligence adds a layer of intelligence and immediacy. Predictive analytics can cluster patients into dynamic risk tiers, alert clinicians when trajectories exceed personalized thresholds, and even propose individualized aspirin or surveillance strategies. When paired with smartphone apps, these systems can automate reassurance for normal readings and triage warnings for abnormal ones, reducing unnecessary anxiety and visits while catching the dangerous outliers early. Yet, as in all of medicine, the introduction of A.I. brings ethical obligations. Algorithms are only as fair as their training data, and unequal access to connected devices risks widening disparities rather than narrowing them.

Equity is the first ethical test of this new paradigm. In the United States, Black women are three times more likely to die from preeclampsia than White women. If we advocate home monitoring, we must ensure affordable devices, bilingual instructions, and digital literacy support for all pregnant patients. The clinician’s duty expands beyond prescribing—it includes teaching, troubleshooting, and validating the data. As A.I. enters this ecosystem, transparency becomes paramount: patients must know who interprets their data, how alerts are generated, and what actions follow.

Another ethical frontier involves trust. Data without context can fuel anxiety; automation without oversight can create complacency. Clinicians must remain the interpreters of nuance—distinguishing a transient elevation from the first sign of disease, or understanding when silence from the algorithm does not mean safety. Training obstetric teams to integrate patient-generated data into decision-making will be as important as refining the algorithms themselves. A.I. should be an assistant, not an oracle.

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The appeal of A.I. in preeclampsia prevention lies in its precision, but its success depends on partnership. Empowered patients are not data sources; they are collaborators in prevention. Each home BP reading represents shared responsibility—a conversation between patient vigilance and professional oversight. When that collaboration is supported by transparent technology, lives are saved, and trust deepens.

The ethical question is no longer whether patients can monitor at home. It is whether we, as clinicians, have the responsibility to ensure they do. Prevention begins not in the ICU but in the living room, with education, inclusion, and connected care. In the age of artificial intelligence, the simplest device—a home blood pressure monitor—may still save the most lives.

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I read it carefully. Some of what it says is worth taking seriously. Much of it is not. And the parts that are not — including two graphs that have no source, no population denominator, and no causal validity — are exactly the kind of thing that sounds compelling until you look closely.

Let me be specific.

This is from an anonymous person

"A Midwestern Doctor" writes under a pseudonym to an audience of 334,000 subscribers, offering specific clinical guidance on birth location, newborn vaccination, and prenatal ultrasound — high-stakes decisions with real consequences for real patients — while remaining completely unverifiable. Readers are told "a physician says this" and left to take it entirely on faith.

No specialty, no training, no licensing board, no hospital credentials, no disciplinary history.

In any actual clinical encounter, we call that a problem: informed consent requires knowing who is advising you, and professional accountability requires that a clinician be traceable when advice causes harm.

The anonymity here is not whistleblowing — it is the strategic borrowing of medical authority without any of the accountability that normally accompanies it.

A physician who counsels a patient toward home birth and something goes wrong answers for it.

An anonymous Substack writer does not.

With 334,000 subscribers, many of them pregnant women making time-sensitive decisions, that asymmetry is not a minor inconvenience. It is an ethical failure.

The Graph That Shows a Rising Maternal Mortality Rate

The post includes a line graph showing maternal deaths per 100,000 live births rising steeply from roughly 7 in 1990 to over 30 by 2021. No source is given. No dataset is cited. No methodology is explained.

The actual CDC data does show a rise in reported maternal mortality in the United States over this period. But what the graph does not tell you — because the author does not tell you — is that a significant portion of this rise is an artifact of coding changes. In 2003, a standard pregnancy checkbox was added to U.S. death certificates. States adopted it at different times, over more than a decade. When a state adopted the checkbox, its reported maternal mortality rate jumped — not because more women were dying, but because more deaths were being identified and captured. Studies published in Obstetrics & Gynecology and the American Journal of Obstetrics and Gynecology have shown that this coding change accounts for a substantial portion of the apparent increase.

The U.S. maternal mortality rate is genuinely higher than peer nations, and that is a real problem worth taking seriously. But a graph without a source, presented without any mention of the coding artifact, is not analysis. It is advocacy wearing the clothes of data.

The Autism and Ultrasound Graph

The second graph is worse. It plots autism prevalence alongside ultrasound machine intensity (SPTA values from “Martin 2010”) and shows the two rising together from 1991 to 2010. The implication is clear: ultrasound causes autism.

This is a textbook example of ecological correlation presented as if it were causation. Internet usage, organic food sales, and the number of Nicolas Cage movies released per year also correlate with autism prevalence over the same period. That is not a joke — it is a standard illustration of why correlation without biological plausibility, dose-response specificity, and controlled study design is meaningless.

The author attributes the graph to “Martin (2010)” — a reference that does not appear in any citation list in the piece, because there is no citation list. I cannot verify this source exists. The large systematic reviews on prenatal ultrasound safety — including a 2015 Cochrane review and a 2017 meta-analysis in Ultrasound in Obstetrics and Gynecology — have not found evidence of harm at diagnostic intensity levels. The consensus that diagnostic ultrasound is safe at recommended doses is not a conspiracy. It is the result of decades of population-level surveillance.

Raising questions about unnecessary ultrasound use is reasonable. Presenting a sourceless correlation graph and implying that ultrasound causes autism is not.

What the Post Gets Right

To be fair: some of the clinical observations in this piece are grounded in real evidence. The case for delayed cord clamping is strong — ACOG endorsed it for term infants in 2016, and the benefits in preterm infants are well established. The documented harms of routine episiotomy are real; rates have appropriately fallen from over 60% in 1979 to under 10% today. Skin-to-skin contact after birth does improve maternal bonding and breastfeeding outcomes. Birthing positions affect pelvic outlet dimensions and labor progress. These are not fringe positions.

The author is also right that the U.S. spends more on childbirth than any comparable nation and does not achieve better outcomes. That disparity is real and demands better answers than it has received.

What the Post Gets Wrong — And Dangerously So

The post implies, and at times states directly, that home birth is safer or equivalent to hospital birth for low-risk pregnancies. This is not supported by population-level data. Our own analyses of CDC natality data — covering millions of births over multiple years — consistently show that planned home births in the United States carry higher rates of neonatal mortality and perinatal complications than planned hospital births, even after stratification for risk factors. This finding is reproducible. It is not a product of hospital-system bias in the data.

The post also waves away the hepatitis B vaccine at birth with a string of speculation — that it was added to habituate parents to vaccine appointments, or to protect a specific refugee population, or for liability reasons. Not one of these claims is sourced. The actual evidence base for newborn hepatitis B vaccination is straightforward: it prevents vertical transmission in infants of infected mothers who were not identified prenatally, and it provides protection across childhood in populations where subsequent vaccination cannot be guaranteed. The author is free to disagree with this policy. Presenting unsourced conspiracy framings as the “four answers from insiders” is not disagreement. It is disinformation.

The section on ultrasound mixes legitimate questions about overuse with references to EMF concentration in the uterus from a building biologist whose paper cannot be located, Chinese abortion studies from the 1980s with no quality assessment, and the author’s personal clinical impression that “regularly ultrasounded” babies lacked vitality. This is not evidence. Framing it alongside real citations creates the illusion of an evidence base that does not exist.

My Take

The obstetric system in the United States has real problems. Overintervention is documented. Cesarean rates are too high. Informed consent is often inadequate. Delayed cord clamping is still not universal despite 10 years of ACOG endorsement. These are things I have written about and published on for decades.

What does not help is a 53-page Substack post that mixes legitimate critique with unsourced graphs, ecological correlations dressed as causation, and conspiracy framings of vaccine policy — published anonymously, with no credentials disclosed, no peer review, and no accountability. It reaches hundreds of thousands of people. Some of them will make birth decisions based on it.

If you want to read criticism of obstetric overintervention, read Henci Goer.

Read the Cochrane reviews on continuous fetal monitoring. Read our published analyses of induction trends in the CDC natality data.

The critique of American obstetrics does not need fabricated graphs to make its case.

The real data are damning enough — and they do not require you to believe that ultrasound causes autism.

Evidence matters. That is true even when the conclusion you reach is one the medical establishment would prefer you did not.

A due date estimates when a pregnancy reaches 40 weeks of gestation. The most biologically accurate approach is based on fertilization, since human gestation averages 266 days from ovulation and fertilization.

—> The most precise due date calculator ←—

Methods based on the last menstrual period use assumptions about when ovulation occurred, which introduces error because ovulation timing varies widely. For that reason, due date accuracy depends on how closely the method reflects the true timing of fertilization.

Only 5% of pregnant women deliver oin their due date and there are many factors that determine when you are likely to go into labor. Calculate your own probability HERE.

Methods of Estimating Due Date (Ranked by Precision)

1. Ovulation Date (Most Precise)

When the exact ovulation date is known, the due date is calculated as ovulation + 266 days. This directly reflects the timing of fertilization and avoids assumptions about cycle length or follicular phase variability. It is most reliable when ovulation is confirmed by hormonal testing, ultrasound, or structured cycle tracking. In routine clinical practice, this level of precision is uncommon without active monitoring.

2. IVF Date

In in vitro fertilization, the timing of fertilization or embryo transfer is known, allowing highly accurate dating. For example, with a day 5 embryo transfer, the due date is calculated as transfer date + 261 days. This method closely approximates true embryologic age because conception timing is controlled. IVF dating is therefore considered a clinical reference standard.

3. Last Menstrual Period (LMP)

The LMP method estimates due date as LMP + 280 days, assuming ovulation occurs on day 14 of a 28-day cycle. This assumption is often incorrect due to natural variation in ovulation timing. Cycle irregularity and recall error further reduce reliability. As a result, LMP-based dating can introduce errors of several days or more.

4. First Trimester Ultrasound

First trimester ultrasound estimates gestational age using crown–rump length (CRL). When performed between 7 and 13 weeks, accuracy is approximately ±3 to 5 days. It is particularly useful when LMP is uncertain or inconsistent with clinical findings. However, it remains an indirect estimate and is slightly less precise than known ovulation or IVF timing.

5. Naegele’s Rule (Traditional Calendar Method)

Naegele’s rule estimates the due date from the first day of the last menstrual period by adding 1 year, subtracting 3 months, and adding 7 days. This is a calendar-based shortcut rather than a true day-count from ovulation or fertilization. Because calendar months vary in length and ovulation does not reliably occur on day 14, the method is inherently approximate. It remains widely used because it is simple, not because it is the most accurate.

A patient once told me she spent more time reading pregnancy apps than sleeping. She was not exaggerating. She had three apps on her phone, a browser full of open tabs, and a growing sense that none of it was giving her real information — just the same recycled sentences dressed up in different fonts. “How many weeks am I?” should have a simple answer. It rarely does.

I built something different. It is called the ObWeekly Pregnancy Week-by-Week Calendar, it lives at tools.obmd.com, and it does something I have not seen anywhere else: it gives you a permanent, shareable link to your exact pregnancy — and it puts every week of your pregnancy directly into your Google or Apple calendar.

What It Is

The ObWeekly Pregnancy Week-by-Week Calendar is a free, evidence-based clinical tool.

You enter your due date — that is all — and the tool calculates your entire pregnancy in exact clinical terms. Not “you are in your fourth month.” Not “baby is the size of a mango.” Those phrases have no clinical meaning. The tool uses gestational age the way ObGyns and midwives use it: in weeks and days,

Not from the first day of your last menstrual period. Because that is often incorrect.

But by calculating back from your due date. The Most Precise way to know your weeks and days.

There are several ways to calculate your due date, and you can do it in the ObMD Due Date Calculator.

Every week from 4 to 42 is displayed with what is actually happening: fetal development, body changes, evidence-based warning signs, and guidance on when to call your provider. Tips to improve pregnancy outcome.

Pregnancy Alerts.

The content comes from peer-reviewed sources and current clinical guidelines — not from wellness bloggers. And it is updated regularly with new evidence.

The Feature Nobody Else Has: A Permanent Link to Your Pregnancy

When you enter your due date, the tool generates a URL that is specific to you, to your estimated due date (EDD) — and that URL never changes. It encodes your due date directly into the web address. No account. No password. No login. No app to download. No privacy policy to scroll past.

This means you can bookmark it once and come back to it every week — and it will always open on your current week. It means you can share the link with your partner, your mother, your doula, your ObGyn — and everyone is looking at the same calendar, the same information, the same clinical week. It is not a screenshot. It is not a PDF. It is a live, working page that anyone with the link can access at any time from any device.

You can add it to your home screen like an app.

No app does this. Most pregnancy apps are built around accounts, subscriptions, and data collection. This tool collects nothing. The URL is the product.

The Calendar Feature: Something Genuinely New

This is the part I am most proud of, and as far as I know, no pregnancy tool has done it before.

The tool generates a complete pregnancy calendar file — in the standard ICS format used by every calendar application in the world — and lets you add all 38 weeks to your Google Calendar or Apple Calendar in a single step. Each week becomes a calendar event. Each event contains the clinical description for that week: what is developing, what to watch for, what is normal.

Your pregnancy is no longer just on your phone in an app. It is in your calendar, alongside your work meetings and your prenatal appointments, visible at a glance, automatically in the right week.

Absolutely right. Creating a dedicated calendar first is the correct workflow — it keeps all 38 weeks organized, lets you show/hide the pregnancy calendar independently, and avoids cluttering the main calendar.

Google Calendar: Adding Your Pregnancy Weeks

Step 1 — Create your ObWeekly calendar (do this first)

On a computer:

1. Go to calendar.google.com

2. In the left sidebar, find “Other calendars” and click the + sign

3. Select “Create new calendar”

4. Name it ObWeekly and click Create Calendar

On Android or iPhone: Calendar creation is not available in the mobile app. Complete Step 1 on a computer first. ObWeekly will then appear automatically in your app.

Step 2 — Import your pregnancy calendar

On a computer:

1. Click the + sign next to “Other calendars” again

2. Select “Import”

3. Choose the .ics file you downloaded from the tool

4. In the calendar dropdown, select ObWeekly

5. Click Import — all 38 weeks load at once

On Android:

1. Download the .ics file to your phone

2. Open the file from your Downloads folder — Google Calendar will recognize it and offer to import

3. When prompted, select ObWeekly as the destination

4. If it does not open automatically: open the Google Calendar app > three-line menu > Settings > Import

On iPhone (Google Calendar app):

1. Download the .ics file

2. Tap the file to open it

3. When prompted, select ObWeekly as the destination

4. If Google Calendar does not open automatically, tap Share on the file and choose Google Calendar from the share menu

Apple Calendar: Adding Your Pregnancy Weeks

Step 1 — Create your ObWeekly calendar (do this first)

On Mac:

1. Open the Calendar app

2. From the menu bar: File > New Calendar

3. Name it ObWeekly and press Return

On iPhone or iPad:

1. Open the Calendar app

2. Tap Calendars at the bottom of the screen

3. Tap Add Calendar in the lower left

4. Name it ObWeekly and tap Done

Step 2 — Import your pregnancy calendar

On Mac:

1. Double-click the downloaded .ics file

2. Apple Calendar opens and asks which calendar to use

3. Select ObWeekly and click OK — all 38 weeks import immediately

On iPhone or iPad:

1. Open the Files app and find the downloaded .ics file

2. Tap the file

3. When prompted, select ObWeekly as the destination and tap Add All

If the file does not open: tap and hold the .ics file > Share > Open With Calendar

Sharing the Pregnancy Timeline

We made it easy to share your pregnancy timeline. All you need to do is copy the URL of your due date (EXAMPLE: 12/31/2027) like this format yyyy/mm/dd: https://obweekly.obmd.com/?due=2027-12-31

Anyone you share this with will be able to follow your timeline. And they can add it to THEIR calendar.

Why This Matters Clinically

Pregnancy apps have a fundamental problem: they require active engagement. You have to open the app, remember to open the app, and find the right screen. Most patients do not do this consistently — and when something concerns them, they often cannot locate the relevant information quickly.

A calendar event is passive. It arrives. It is already in the workflow patients use every day. When week 28 begins, the event is there in their calendar — with the clinical information for week 28, including the signs that warrant a call to their provider. They did not have to go looking for it.

The tool does not replace prenatal care. It is not designed to. It is designed to help patients understand what is happening week by week, in plain language, using accurate clinical terminology — so that when they do see their provider, the conversation is better.

My Take

The pregnancy app market is enormous, and nearly all of it is built around engagement metrics, subscription revenue, and data collection. The tools that are free are often free because you are the product. This tool is different. It is a one-time interaction: enter your due date, get your calendar, use it for nine months. No account, no tracking, no subscription.

The shareable URL is not a gimmick. Pregnancy is not a solo event. Partners, family members, and care team members all benefit from having access to the same evidence-based information. A single link solves that. The calendar integration goes one step further: it makes pregnancy information ambient rather than on-demand. For patients who are already overwhelmed, that distinction is real.

I built this because I was tired of seeing patients arrive to appointments with conflicting information from three different apps — none of which cited a single source. Fifty years of obstetric practice is a lot of information to distill. This tool is one attempt to do it honestly.

Try it at tools.obmd.com. Enter your due date. Share the link. Add it to your calendar. Then tell me what I missed.

Amos Grunebaum, MD | Professor of Obstetrics & Gynecology | Maternal-Fetal Medicine | obmd.com

She had done everything right.

She had written a birth plan. She had taken the hospital’s childbirth class. She had read three books, watched hours of YouTube videos, and hired a doula. She had decided, firmly, that she did not want an epidural.

Then labor started. At 5 centimeters, the contractions were coming every two minutes. She asked for the epidural. The anesthesiologist arrived 47 minutes later. Within 20 minutes, her pain dropped from a 9 to a 2. She delivered vaginally four hours later without complications.

Afterward, she cried. Not from joy. From guilt.

Her mother-in-law told her the epidural had “slowed everything down.” A friend texted that epidurals “make cesareans more likely.” An Instagram post she had saved months ago said epidurals “interfere with bonding.” None of these claims were supported by the evidence she had never been shown.

She had made a perfectly reasonable medical decision. And the people around her, armed with myths instead of data, made her feel like she had failed.

This graph shows data from the CDC birth database showing nearly 80% (4 in 5 or 80 in 100) had an epidural as of 2024, up from 72% in 2016.

The Gap Between Fear and Evidence

Epidural analgesia is the single most effective form of pain relief available during labor. The 2018 Cochrane review, which pooled data from 40 randomized controlled trials involving more than 11,000 women, found that epidurals reduce pain scores dramatically compared to opioid analgesia or no analgesia (1). Women with epidurals were far less likely to need additional pain relief (RR 0.10) and reported significantly higher satisfaction scores.

Yet epidurals remain one of the most misunderstood interventions in obstetrics. Myths about back pain, cesarean risk, and harm to babies persist across social media, birth classes, and even some provider conversations. Many of these beliefs are based on outdated studies using older, high-dose techniques that bear little resemblance to modern low-concentration epidural analgesia.

The evidence has moved. The conversation has not.

Here is what you need to know, and what to ask, before you are in the middle of a contraction.

The 17 Questions

1. Do epidurals increase my risk of a cesarean section?

What the evidence shows: No. The 2018 Cochrane review of 40 RCTs found no increased risk of cesarean delivery with epidural analgesia compared to opioid analgesia (1). A separate meta-analysis of early versus late epidural placement (9 RCTs, 15,752 women) found no difference in cesarean rates regardless of cervical dilation at the time of placement (RR 1.02, 95% CI 0.96-1.10) (2). A 2023 comprehensive review in the American Journal of Obstetrics and Gynecology confirmed that high-quality studies have “consistently shown no increased risk of cesarean delivery associated with epidural analgesia” (3). A 2025 retrospective study of 387 women in Saudi Arabia similarly found that while crude rates appeared higher with epidurals, multivariable analysis showed no significant effect (4).

The confusion persists because women with longer, more difficult labors are more likely to request epidurals. The epidural does not cause the cesarean. The difficult labor causes both.

What to do now: If a provider or family member tells you epidurals cause cesareans, ask them for the randomized trial that shows this. It does not exist in the modern literature. Make your pain relief decision based on your pain, not on fear of a surgical outcome the data does not support.

Below are 16 more evidence-based questions every pregnant person should be able to answer before labor. Each includes what the research shows and what to do with that information.

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Maria was 34 weeks pregnant with her second baby when the headache started. Not a dull ache. A pounding, relentless pressure behind her eyes that Tylenol couldn’t touch. She almost didn’t call her doctor. After all, headaches are common in pregnancy, right? Her mother told her to drink more water. A pregnancy app said it was probably hormonal.

It wasn’t hormonal. Maria’s blood pressure was 178/110. She had severe preeclampsia. Within hours, she was on a magnesium drip and her baby was delivered by emergency cesarean.

Maria was lucky. She called. Many women don’t.

The Problem: Pregnancy Normalizes Everything

Here is a hard truth about pregnancy in the United States: Manyb pregnancy-related deaths are preventable and education isd essential. Not rare genetic conditions. Not unforeseeable tragedies. Preventable deaths. Deaths that could have been avoided if the right questions had been asked at the right time.

In 2023, 669 women died of maternal causes in the United States (2). The severe maternal morbidity rate has been climbing steadily, rising from 1.4% in 2016 to 2.0% in 2023 in one large state-level study (3). For every woman who dies, 70 to 80 more survive a near-death event related to pregnancy or childbirth (4).

The most dangerous phrase in obstetrics may be: “That’s just a normal part of pregnancy.”

Yes, pregnancy comes with discomfort. Backaches, fatigue, swelling ankles, the occasional headache. But certain symptoms cross a line from inconvenience to emergency. The difference between the two is not always obvious, especially when you are exhausted, overwhelmed, and told repeatedly that what you are feeling is “normal.”

Preeclampsia alone affects 3 to 8% of all pregnancies worldwide (5). Visual symptoms occur in up to 25% of women with severe preeclampsia and 50% of those with eclampsia (6). Decreased fetal movement precedes stillbirth in a significant number of cases, with one study showing a 14-fold increased risk of stillbirth when movement was reduced in the prior two weeks (7). Stillbirth affects 1 in 175 pregnancies in the United States, with stark racial disparities (8). UTIs during pregnancy nearly double the risk of preterm birth (9). And vaginal bleeding that persists across trimesters increases the risk of spontaneous preterm labor more than sixfold (10).

These numbers represent real women, real families, and real opportunities for earlier intervention.

The questions below are designed to help you recognize when a symptom demands action, and to give you the language to advocate for yourself at the hospital, in the office, or on the phone.

Subscribe to read the 10 questions every pregnant woman should know how to ask.

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She was 34 weeks pregnant and miserable. Not from the usual discomforts — the swollen ankles, the heartburn, the insomnia. She was in my office because she had been straining on the toilet for twenty minutes every morning. Her hemorrhoids had hemorrhoids. She had not slept well in two weeks.

When I asked her what she had been told about managing bowel movements in pregnancy, she looked at me the way people look when they suspect the answer is about to embarrass someone.

“Eat more fiber,” she said. “Drink more water.”

That was it. That was the entirety of the guidance she had received across twelve prenatal visits from three different providers.

Nobody had told her about toilet posture. Nobody had mentioned the peri-bottle sitting on the shelf at the pharmacy for eight dollars. Nobody had explained which direction to wipe, or why it matters in pregnancy more than at any other time in a woman’s life. Nobody had talked about magnesium — which form, which dose, taken when. And nobody had told her to wash her hands before, not just after.

She was not unusual. She was representative.

A Note Before We Start: This Is for Both of You

This piece is written for two audiences at once, and I want to be honest about that.

If you are a pregnant woman reading this: everything here is practical, evidence-based, and something you can act on today. None of it requires a prescription. Most of it requires a trip to a pharmacy or a footstool from any hardware store. The information was available; it simply was not given to you. That is not your fault, and it ends here.

If you are a clinician reading this — an obstetrician, a midwife, a family physician, a nurse practitioner — I want to say something directly: this material is not beneath you. The toilet is not a topic that resolves itself, and it is not something your patients are too embarrassed to discuss if you are not too embarrassed to raise it. Constipation affects up to 38% of pregnant women. Hemorrhoids affect the majority by the third trimester. UTIs complicate 2 to 7% of pregnancies and can trigger preterm labor. The interventions in this piece are low-cost, safe, and effective. They belong in the first prenatal visit, not the eleventh, and not only after something goes wrong.

Both audiences deserve the same information. It is the same body. It is the same evidence.

The Teaching Gap Nobody Is Talking About

Here is a question worth sitting with: at what point in medical training does a student learn how to counsel a pregnant patient about toilet posture, perineal hygiene, or bowel management?

The answer, in most programs, is never.

Medical schools do not teach it. Residency programs do not teach it. ACOG guidelines address constipation in pregnancy with a few sentences and a recommendation to increase fiber and fluid — which is true and insufficient. There is no module in prenatal care education on bathroom mechanics. There is no checklist item at the 28-week visit that says: ask about bowel habits, discuss posture, explain wiping direction, recommend a peri-bottle, review handwashing. The silence is institutional, not individual. Individual clinicians are not failing their patients out of indifference. They are not teaching what they were never taught.

This matters because the consequences accumulate quietly. A woman who strains on the toilet every day for twelve weeks develops hemorrhoids that may take months to resolve after delivery. A woman who does not know to wipe front to back is more likely to develop a UTI that, left undetected, can ascend to the kidneys and precipitate preterm labor. A woman who has never heard of a peri-bottle spends the third trimester in unnecessary discomfort on a problem that warm water and thirty seconds would largely resolve.

None of this rises to the drama of a postpartum hemorrhage or a shoulder dystocia. That is precisely why it goes unaddressed. Obstetric education allocates its attention to the high-stakes emergencies — as it should — but in doing so it leaves an enormous middle ground of daily, preventable suffering without guidance. The woman in my office at 34 weeks was not in a life-threatening situation. She was just miserable, every single morning, for no good reason.

That is what a teaching gap looks like from the inside.

How Common Is This, Really?

Constipation affects between 11% and 38% of pregnant women. A 2024 systematic review in BMC Pregnancy and Childbirth put the global prevalence at roughly 38% — more than one in three. Hemorrhoids follow closely behind: one study of 835 pregnant women found a prevalence of 86%, and a 2024 prospective cohort from Lithuania found that 40% of women developed hemorrhoidal disease during pregnancy or shortly after delivery, with 61% of cases appearing in the third trimester. Anal symptoms of some kind — bleeding, pain, prolapse, fissure — were reported by 50% of women in one prospective study, rising to nearly 63% by three months postpartum.

Urinary tract infections complicate 2 to 7% of all pregnancies, and an untreated UTI that ascends to the kidneys can trigger preterm labor. E. coli — the primary cause of 80 to 90% of pregnancy UTIs — lives in feces. What happens in the bathroom directly affects whether it stays where it belongs.

These are not nuisance complaints. They are preventable. That is what makes the silence around them so hard to defend.

Why Pregnancy Makes All of This Worse

Pregnancy stacks every disadvantage at once. Progesterone relaxes smooth muscle throughout the digestive tract, slowing transit time. Stools get harder and drier. The growing uterus compresses the rectum from above and the inferior vena cava from below, increasing backpressure in pelvic veins. Blood volume rises 40 to 50%, meaning more blood pooling in an already-compressed venous system. Iron in prenatal vitamins — necessary but constipating — adds its own effect on top of everything else. Women with constipation are 2.5 to 4.3 times more likely to develop hemorrhoidal disease. Straining harder and sitting longer on the toilet makes every one of these problems worse.

What follows are actual recommendations — specific, numbered, and actionable. After fifty years of delivering babies, I have learned that "talk to your provider" is often medical-speak for "I am not going to tell you." And I have learned that "counsel patients on bowel habits" in a clinical guideline is often academic-speak for the same thing. Here, I will tell you both.

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She sat across from me, 14 weeks pregnant, holding a to-go cup she clearly wanted to hide behind her purse. “My mother-in-law told me I’m poisoning the baby,” she said. “I had half a cup of coffee this morning.”

I hear some version of this conversation every week. Pregnant women are told to avoid coffee like it’s a toxin. Friends, family members, and even some providers treat caffeine as a danger to be eliminated entirely. The guilt is enormous. The science says something different.

The Fear Factory

For decades, pregnant women have been told that caffeine is dangerous. The concerns center on three claims: coffee causes miscarriage, coffee harms fetal brain development, and coffee leads to low birth weight. These fears have become so deeply embedded that about 70% of pregnant women who continue to drink coffee feel guilty about it.

ACOG recommends limiting caffeine to less than 200 mg per day, roughly two small cups of coffee.

But here is what most providers do not tell you: the evidence for potential benefits of moderate coffee consumption during pregnancy is growing, and the evidence against it is weaker than you have been led to believe.

What the Mendelian Randomization Studies Show

Observational studies linking coffee to miscarriage have a fundamental problem. Women who drink a lot of coffee are also more likely to smoke, drink alcohol, and have other lifestyle factors that independently affect pregnancy. Separating the effect of coffee from everything else it correlates with is nearly impossible using traditional study designs.

Enter Mendelian randomization. This method uses genetic variants that predict coffee-drinking behavior to separate out the actual effect of caffeine from confounders. It mimics a randomized controlled trial without exposing anyone to harm.

A large Mendelian randomization study using data from the Coffee and Caffeine Genetics Consortium (N = 91,462) examined miscarriage (N = 49,996 cases), stillbirth, birthweight, gestational age, and preterm birth. The conclusion: coffee consumption during pregnancy may not contribute to adverse outcomes such as stillbirth, sporadic miscarriages, and preterm birth [1].

A 2025 systematic review of 31 Mendelian randomization studies in spontaneous miscarriage confirmed this. Coffee consumption showed no causal association with miscarriage risk. Smoking and insomnia were identified as actual risk factors. Coffee was not [2].

The Brain Development Question

One of the most persistent fears is that caffeine harms fetal brain development. Caffeine crosses the placenta. The fetus lacks the enzymes to metabolize it. These facts sound alarming. But biological plausibility is not the same as demonstrated harm.

A 2024 University of Queensland-led study used Mendelian randomization with genetic data from tens of thousands of families in Norway, where Scandinavians drink at least 4 cups of coffee a day with little stigma during pregnancy. The researchers tracked children’s social, motor, and language development through age 8. They found no strong links between maternal coffee consumption and neurodevelopmental difficulties [3].

A 2025 study published in Scientific Reports examined tea and coffee consumption during pregnancy and children’s cognitive development, adding to the growing body of evidence that moderate intake does not impair childhood cognitive outcomes [4].

The Surprise: Coffee May Protect Against Gestational Diabetes

Here is where the story gets genuinely interesting. Not only does moderate coffee appear safe, but it may actually reduce the risk of gestational diabetes.

A study published in JAMA Network Open examined 2,529 pregnant women enrolled in the NICHD Fetal Growth Studies. The researchers found that drinking up to 100 mg of caffeine per day (about one cup of coffee) during the second trimester was associated with a 47% reduction in gestational diabetes risk. There was no increased risk of preeclampsia or hypertension [5].

That 47% number deserves attention. Gestational diabetes affects about 10% of pregnancies in the United States. It carries real risks for both mother and baby, including macrosomia, birth injury, and future type 2 diabetes. A nearly 50% risk reduction from a single cup of coffee is a finding that warrants serious discussion.

The Danish National Birth Cohort, studying 71,239 non-diabetic women with singleton pregnancies, found similar results. Moderate first trimester coffee and tea intake was not associated with increased gestational diabetes risk and possibly had a protective effect [6].

The Kuopio Birth Cohort from Finland (N = 2,214) found that women with moderate coffee intake in the first trimester were less likely to be diagnosed with gestational diabetes [7].

Why Coffee Might Help

Coffee is not just caffeine. A single cup contains over 100 polyphenols, primarily chlorogenic acids. These compounds have documented anti-inflammatory and insulin-sensitizing properties. In non-pregnant adults, regular coffee consumption decreases subclinical inflammation, increases adiponectin levels, and reduces the risk of type 2 diabetes.

The researchers from the JAMA Network Open study noted that women consuming 1 to 100 mg of caffeine daily had lower C-reactive protein, lower total cholesterol, lower triglycerides, and lower LDL cholesterol compared with non-consumers. These are markers of improved metabolic health, not harm.

The protective mechanism likely involves the phytochemicals in coffee, not just the caffeine itself. Chlorogenic acids may improve glucose control, insulin sensitivity, and appetite regulation. This may explain why decaffeinated coffee does not show the same protective association with gestational diabetes.

Your provider may not share these numbers with you. But you deserve to know them. The specific evidence, the actual risk reductions, and the questions to ask at your next appointment are below. Subscribe to ObGyn Intelligence to get the information that puts you in charge of your own care.

Know Your Numbers, Trust Your Body

Here is what the evidence actually tells you about coffee during pregnancy:

The safety threshold: ACOG recommends less than 200 mg of caffeine per day (about two 6-ounce cups of brewed coffee, or roughly 190 mg). One standard 8-ounce cup of brewed coffee contains about 95 mg of caffeine.

The gestational diabetes connection: Up to 100 mg of caffeine per day in the second trimester was associated with a 47% reduction in gestational diabetes risk and a better cardiometabolic profile.

The miscarriage data: Mendelian randomization studies, which control for confounders better than observational studies, find no causal link between moderate coffee consumption and miscarriage.

The brain development data: Large genetic analyses tracking children through age 8 find no strong links between maternal coffee consumption and neurodevelopmental difficulties.

The nuance that matters: High intake (above 350 mg/day) may carry dose-dependent risks. The evidence for benefit applies to moderate consumption, not unlimited intake. And the lead researcher herself cautioned that women who do not drink coffee should not start just for these benefits. The reassurance is for women who already enjoy their morning cup.

What To Ask Your Provider

1. “What is the current ACOG recommendation for caffeine in pregnancy, and is there evidence that moderate intake may have metabolic benefits?”

2. “Are there Mendelian randomization studies showing coffee does not cause miscarriage?”

3. “Given my risk factors for gestational diabetes, should moderate coffee consumption be part of our discussion?”

The Bigger Picture

The coffee-in-pregnancy story illustrates a pattern we see over and over in obstetrics. An association is observed. A warning is issued. The warning becomes doctrine. And then better evidence arrives showing the association was confounded, the risk was overstated, or the intervention was unnecessary.

This does not mean we should ignore all cautions. It means we should follow the evidence, not the fear. And the evidence says that your morning cup of coffee, kept under 200 mg of caffeine, is not the villain it has been made out to be. It might even be doing you some good.

References

1. Moen GH, et al. Mendelian randomization study of maternal coffee consumption and its influence on birthweight, stillbirth, miscarriage, gestational age and pre-term birth. Int J Epidemiol. 2023;52(1):165-178.

2. Xiang S, et al. A systematic review of Mendelian randomization in spontaneous miscarriage. J Multidiscip Healthc. 2025;18:2237-2246.

3. D’Urso S, Moen GH, et al. Coffee during pregnancy safe for baby’s brain development. Psychol Med. 2024. University of Queensland.

4. Ouyang J, Wu P, Chen L, et al. Impact of tea and coffee consumption during pregnancy on children’s cognitive development. Sci Rep. 2025;15:8832.

5. Hinkle SN, Gleason JL, Yisahak SF, et al. Assessment of caffeine consumption and maternal cardiometabolic pregnancy complications. JAMA Netw Open. 2021;4(11):e2133401.

6. Hinkle SN, Laughon SK, Catov JM, Olsen J, Bech BH. First trimester coffee and tea intake and risk of gestational diabetes mellitus: a study within a national birth cohort. BJOG. 2015;122(3):420-428.

7. Kukkonen A, Hantunen S, Voutilainen A, et al. Maternal caffeine, coffee and cola drink intake and the risk of gestational diabetes: Kuopio Birth Cohort. Prim Care Diabetes. 2024;18(3):362-367.

And if you’re already pregnant? That appointment is just as important—maybe more so.

Yet despite clear guidance from both the American College of Obstetricians and Gynecologists (ACOG) and the American Dental Association (ADA) that oral health care, including having dental radiographs taken and being given local anesthesia, is safe at any point during pregnancy, American Dental Association too many pregnant women skip the dentist—and too many providers hesitate to refer them.

This needs to change.

Start Before the Stick Turns Pink

Preconception is the ideal time to address dental problems. Cavities, gum disease, that wisdom tooth that’s been bothering you—take care of it now.

Why? Because once you’re pregnant, your mouth becomes a harder environment to manage. Hormonal changes will work against you. And while dental care during pregnancy is completely safe, it’s much easier to start from a healthy baseline than to play catch-up while dealing with morning sickness, fatigue, and everything else pregnancy throws at you.

Think of it like this: you’d get your car serviced before a long road trip. Your mouth deserves the same consideration before the nine-month journey ahead.

What Pregnancy Does to Your Mouth

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Pregnancy hormones don’t just cause morning sickness and mood swings. They fundamentally alter what’s happening in your gums.

Rising levels of estrogen and progesterone increase blood flow to gingival tissue and change how the immune system responds to oral bacteria. These hormones are supposed to be responsible for gingivitis progression PubMed Central through multiple mechanisms: they stimulate bacterial growth in the mouth, resulting in a shift in bacteria flora, PubMed alter cytokine production involved in inflammatory responses, and change the rate and pattern of collagen production in gingiva, thereby reducing the body’s ability to repair and maintain PubMed healthy tissue.

The result? Gums that swell, bleed easily, and become inflamed.

This is called pregnancy gingivitis, and it’s incredibly common. Gingivitis is common and affects 60% to 75% of all pregnancies in the U.S. Cleveland Clinic Interestingly, research suggests that its incidence is only 0.03% if pregnant women are plaque-free at the beginning of pregnancy and practice good oral hygiene during pregnancy PubMed—underscoring why preconception dental care matters so much.

For most women, pregnancy gingivitis is a nuisance. Gums that bleed when you brush. Some tenderness. Symptoms often start to become evident in the second trimester and peak in the third trimester. Delta Dental Institute But for some women, gingivitis can progress to periodontitis—a more serious infection that damages the bone and tissue supporting the teeth.

Why This Matters for Your Baby

Here’s where it gets serious.

A growing body of research has examined the relationship between maternal periodontal disease and adverse pregnancy outcomes. The evidence is compelling, though not yet definitive.

A 2020 meta-analysis of cohort studies found statistically significant values were obtained regarding the risk of preterm birth in pregnant women with periodontitis (RR = 1.67, 95% CI 1.17-2.38), and low birth weight (RR = 2.53, 95% CI 1.61-3.98). PubMed

Case-control studies have shown similar associations. One systematic review reported the estimated odds ratio was 1.78 (CI 95%: 1.58, 2.01) for preterm birth, 1.82 (CI 95%: 1.51, 2.20) for low birth-weight and 3.00 (CI 95%: 1.93, 4.68) for preterm low birth-weight. PubMed

A large population-based cohort study from Taiwan found that the advanced periodontal disease group had OR of 1.09 (95% CI 1.07–1.11) for preterm birth, Nature with increased severity correlating with higher risk.

What about treatment? A 2019 meta-analysis of 20 randomized controlled trials involving over 8,000 participants found that periodontal treatment during pregnancy was associated with significantly decreased risk of perinatal mortality (RR = 0.53, 95% CI 0.30-0.93) PubMed and reduced risks of preterm birth (RR = 0.78, 95% CI 0.62-0.98). PubMed Treatment also significantly increased birthweight PubMed by an average of 200 grams.

However, not all studies agree. Some meta-analyses have shown a non-significant reduction in preterm births PubMed with treatment. The heterogeneity in findings likely reflects great variety in the definitions of periodontal disease, type and extent of periodontal examination, inclusion criteria, sample selection, and other factors. PubMed Central

The proposed biological mechanism involves hematogenous pathways or the presence and intervention of inflammatory mediators PubMed Central—essentially, bacteria and inflammatory cytokines from infected gums may enter the bloodstream and trigger responses that affect the uterus.

The Bottom Line on Evidence

Is the causal link proven? No. But ACOG acknowledges that oral health disorders, such as periodontitis, are associated with many disease processes, ACOG and approximately 40% of pregnant women in the US have some form of periodontal disease. Preeclampsia Foundation

More importantly, the American Dental Association and the American College of Obstetricians and Gynecologists agree that emergency treatments, such as extractions, root canals or restorations can be safely performed during pregnancy and that delaying treatment may result in more complex problems. American Dental Association

The absence of definitive proof that treatment prevents preterm birth shouldn’t be confused with absence of benefit. Treating maternal periodontal disease improves maternal oral health—and may reduce transmission of cariogenic bacteria to infants.

The Myth That Keeps Women Away

So why do so many pregnant women skip the dentist?

Because somewhere along the way, they were told—or assumed—that dental care isn’t safe during pregnancy. That X-rays could harm the baby. That anesthesia is off-limits. That it’s better to just wait.

None of this is true.

Dental cleanings are safe throughout pregnancy—and especially important given what hormones are doing to your gums.

Dental X-rays are safe. According to the American College of Radiology, no single diagnostic x-ray has a radiation dose significant enough to cause adverse effects in a developing embryo or fetus. American Pregnancy Association In fact, the ADA now states that radiographs are considered safe for the pregnant patient, at any stage during pregnancy; shielding (abdominal or thyroid) is no longer recommended. American Dental Association (Though if a patient prefers shielding for peace of mind, there’s no harm in offering it.)

Local anesthesia (lidocaine with or without epinephrine) is safe. ACOG confirms that prevention, diagnosis, and treatment of oral conditions, including dental X-rays and local anesthesia (lidocaine with or without epinephrine), are safe during pregnancy. California Dental Association

Necessary procedures—fillings, root canals, extractions—can and should be done during pregnancy if needed. Conditions that require immediate treatment, such as extractions, root canals, and restoration of untreated caries, may be managed at any time during pregnancy. California Dental Association

The second trimester is often the most comfortable time for dental work, but there’s no trimester when routine care is off-limits.

The Elephant in the Room: Medicaid and the Two-Tiered System

Here’s what we don’t talk about enough.

Everything I’ve written above assumes a pregnant woman can actually get dental care. For millions of women in America, she can’t.

Medicaid covered 1.5 million births in 2023—representing 41% of all U.S. births—and financed nearly half (47%) of births in rural areas. KFF In some states, like Louisiana, Medicaid covered nearly two in three (64% of) births. KFF

The numbers are even more striking when you look at race. Among Black and Hispanic mothers, 64.0% and 58.1% of deliveries, respectively, were covered by Medicaid in 2021. CDC

So when we tell pregnant women that dental care is safe and important, we need to ask: for whom is it actually accessible?

Here’s the ugly truth: Medicaid dental coverage for adults is not required by federal law, so each state decides whether to offer it. GoodRx As of late 2024, one state, Alabama, offered no adult dental benefits unless the enrollee was pregnant or postpartum. Seven states offered emergency-only coverage. HealthInsurance.org

But even in states that offer coverage, finding a dentist willing to accept Medicaid is another matter entirely.

For all dentists, the top barrier was reimbursement—more than nine out of ten dentists cited it as a very or extremely important factor American Dental Association for not participating in Medicaid. According to a study by the Department of Health and Human Services, states report that inadequate reimbursement is the most significant reason dentists do not accept Medicaid patients. Mchoralhealth

The result? The majority of dentists (67%) had zero Medicaid patients. Sage Journals

Let that sink in. Two-thirds of dentists see zero patients on Medicaid.

The data on dental visits during pregnancy tells the story. Medicaid-enrolled women in states with no dental coverage were less likely to visit dentists for cleaning during pregnancy (26.7%) compared with women in states with either limited dental coverage (36.6%) or extended dental coverage (44.9%). PubMed

Only about a quarter of Medicaid-enrolled pregnant women in states without dental coverage get their teeth cleaned during pregnancy. Meanwhile, we publish guidelines telling them it’s important.

This is not a knowledge gap. This is a justice gap.

A Moral Reckoning for Two Professions

I’m going to be direct here—to both my colleagues in obstetrics and our colleagues in dentistry.

To obstetricians: We cannot keep counseling patients about the importance of dental care while failing to acknowledge the systemic barriers that make that care inaccessible for nearly half of pregnant women. 80% of obstetricians did not use oral health screening questions in their prenatal visits, and 94% did not routinely refer all patients to a dentist. ACOG And even when we do refer, we’re often sending women on a frustrating quest to find a provider who will actually see them.

We need to know which dental providers in our communities accept Medicaid. We need to advocate for expanded dental coverage in our states. We need to stop pretending this is someone else’s problem.

To dentists: I understand that Medicaid reimbursement rates are often below the cost of providing care. I understand the administrative burdens. But two previously unreported barriers to participation in Medicaid emerged: dentists’ perception of social stigma from other dentists for participating in Medicaid, and the lack of specialists to whom Medicaid patients can be referred. PubMed Central

Social stigma. From other dentists. For treating low-income patients.

When we talk about professionalism and ethics in medicine and dentistry, this is where the rubber meets the road. We cannot celebrate the safety of dental care in pregnancy while maintaining a system where the women at highest risk for poor outcomes—disproportionately Black, Hispanic, rural, and low-income—have the least access to that care.

Black pregnant women are 27% more likely to experience severe pregnancy complications than white women. CareQuest Institute for Oral Health They’re also more likely to be on Medicaid. And they’re more likely to be turned away from dental offices.

This is a structural injustice. And both professions bear responsibility for it.

What Needs to Change

For patients: Know your rights. If you’re pregnant and on Medicaid, dental coverage varies by state—but it’s worth checking what’s available. Community health centers (FQHCs) are more likely to accept Medicaid and may be a resource. Dental schools often provide care at reduced costs.

For clinicians: Screen every pregnant patient for oral health needs. Know which dentists in your area accept Medicaid. Advocate for expanded coverage in your state. And if you’re a dentist who doesn’t see Medicaid patients—ask yourself why.

For policymakers: Medicaid is the largest single payer of maternity care in the U.S., covering more than 40% of U.S. births. ACOG Comprehensive dental benefits during pregnancy should not be optional. Reimbursement rates need to reflect the actual cost of providing care.

The Bottom Line

Your mouth is part of your body. Ignoring it—before or during pregnancy—doesn’t protect your baby. It may do the opposite.

If you’re planning to conceive, put the dentist on your preconception checklist. If you’re already pregnant, schedule that appointment now. Get the cleaning. Address any problems.

And if you can’t find a dentist who will see you—know that this is not your failure. It’s ours.

Your gums—and possibly your pregnancy—deserve better.

Dental care isn’t just safe before and during pregnancy. It’s recommended. The question is whether we’re willing to make it accessible to everyone who needs it.