“First, Do No Harm” Is the Wrong North Star for Medicine
“Primum non nocere” is not Hippocratic, is not good ethics, and has never guided obstetric care well. Here is the framework that actually does.
There is a phrase doctors repeat like a prayer.
Primum non nocere. First, do no harm.
It is printed on mugs and etched into white coat ceremonies. It is quoted in malpractice depositions and in op-eds about artificial intelligence. It is comforting. It is familiar. It is also wrong.
The phrase is not from the Hippocratic Oath.
The original Hippocartic Oath asks physicians to act for the benefit of the sick and to keep them from harm and injustice, which is not the same thing. The Latin version surfaced centuries later, through writers like Thomas Sydenham and Thomas Inman. None of that would matter if the idea worked.
It does not.
In obstetrics and gynecology, the phrase falls apart the moment you step into a labor room.
Every obstetric intervention carries harm. A cesarean harms. A labor induction harms. An epidural harms. A vaginal exam harms. Expectant management harms. There is no path through pregnancy that avoids harm.
The true ethical question is never whether to harm. It is which harm is acceptable, in pursuit of which benefit, for which patient, on which terms.
“Do no harm” cannot answer that question. It pretends the answer is obvious when the answer is hard.
In obstetrics the phrase is worse than unhelpful. It is disorienting. We care for two patients whose interests can diverge. A pregnant patient with severe preeclampsia at 35 weeks faces continued harm from pregnancy. Her fetus faces harm from early delivery. Either choice harms someone. “First, do no harm” cannot tell you what to do. It tells you nothing.
It also gets weaponized. I have watched physicians invoke it to defend inaction. To withhold tranexamic acid in postpartum hemorrhage because it is “an added intervention.” To decline to recommend influenza or COVID vaccination in pregnancy because the vaccine “might harm.” In each case, inaction was the greater harm. Yet the slogan made inaction feel ethical.
There are better foundations. None of them are new.
The first is beneficence balanced with respect for patient autonomy. Frank Chervenak and Laurence McCullough have spent decades working this out in the obstetric ethics literature.
Physicians carry two kinds of ethical obligation. One is beneficence, acting for the patient’s benefit based on the best evidence. The other is respect for autonomy, honoring the patient’s values and informed choices. The job is to weigh them. Not to absolutely avoid harm, but to weigh harm against benefit, with the patient at the center of the decision.
The second is preventive ethics. You do not wait for ethical conflict to erupt at two centimeters. You anticipate it. You talk about shoulder dystocia at 36 weeks, not when the head is out. You discuss cesarean risks at a prenatal visit, not under the drapes. You get consent while there is time for consent to mean something. Preventive ethics treats informed consent as a process, not a signature.
The third is the professional responsibility model of medicine. A physician is not a vendor of services the patient orders. A physician is not a rubber stamp on patient preference. The physician carries a fiduciary obligation to the patient’s health-related interests, grounded in science, tempered by the patient’s values. That model has teeth. “Do no harm” does not.
The fourth is proportionality. Every decision in medicine is a weighing. The benefit must be proportional to the burden. The risk must be proportional to the expected gain. We do not refuse surgery because surgery harms. We ask whether the surgery is worth the harm. That is an honest question. “Do no harm” is not.
My take.
“First, do no harm” has survived because it sounds humble. In practice it is often the opposite. It rewards inaction. It lets clinicians hide behind a slogan when the harder work is to explain a risk, recommend a course, and document a choice. It gives cover to physicians who do not want to induce, do not want to vaccinate, do not want to operate, and do not want to admit that not acting is also a choice with consequences. In obstetrics, where the clock runs and two patients are in the room, that cover can be lethal.
Medicine does not need that Latin slogan. It needs a framework that names the obligations, counts the harms, respects the patient, and acts. Beneficence. Autonomy. Preventive ethics. Professional responsibility. Proportionality. Informed consent. Those are the words to teach residents. Those are the words to write into consent forms. Those are the words that survive a labor-room decision at three in the morning.
Put the mug down. Do the ethics.
Bottom line.
Retire “primum non nocere” from serious clinical conversation. Teach the real frameworks instead. The next time a colleague invokes the phrase to justify not acting, ask which harm they are preventing and which harm they are causing. Make them answer.
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References
1. Smith CM. Origin and uses of primum non nocere: above all, do no harm! J Clin Pharmacol. 2005;45(4):371-377.
2. Sokol DK. “First do no harm” revisited. BMJ. 2013;347:f6426.
3. Chervenak FA, McCullough LB. The professional responsibility model of obstetrical ethics: avoiding the perils of clashing rights. Am J Obstet Gynecol. 2011;205(4):315.e1-315.e5.
4. Chervenak FA, McCullough LB. Ethics in Obstetrics and Gynecology. 2nd ed. New York: Oxford University Press; 2005.
5. Beauchamp TL, Childress JF. Principles of Biomedical Ethics. 8th ed. New York: Oxford University Press; 2019.
6. Grobman WA, Rice MM, Reddy UM, et al; Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. Labor induction versus expectant management in low-risk nulliparous women. N Engl J Med. 2018;379(6):513-523.
7. WOMAN Trial Collaborators. Effect of early tranexamic acid administration on mortality, hysterectomy, and other morbidities in women with post-partum haemorrhage (WOMAN): an international, randomised, double-blind, placebo-controlled trial. Lancet. 2017;389(10084):2105-2116.