Primum non nocere is a Latin phrase that means "first, do no harm." [1]

## Meaning and Ethics

 

* Non-maleficence: This concept forms the core of [bioethics](https://en.wikipedia.org/wiki/Primum_non_nocere) and guides healthcare workers to weigh risks against potential rewards. [1, 2]

* Active Restraint: It reminds doctors that doing nothing or waiting may sometimes be safer than intervening with a risky treatment. [1]

 

## Origin and Misconceptions

 

* Not Hippocrates: While often linked to the [Hippocratic Oath](https://en.wikipedia.org/wiki/Hippocratic_Oath), the exact phrase primum non nocere does not appear in the original Greek text. [3, 4]

* Real Source: A similar idea appears in Hippocrates' work Of the Epidemics ("help, or at least do no harm"), but the specific Latin phrasing popularized later in medical history. [5, 6]

 

## Modern Reality

 

* Risk vs. Benefit: Modern medicine relies on balancing necessary harms—such as the pain of surgery or side effects of chemotherapy—against long-term healing. [2, 7, 8]

* Practical Application: Clinicians interpret the rule to mean that potential benefits must outweigh potential risks, rather than expecting zero negative side effects. [7, 9]

 

Would you like to explore how this principle applies to a specific medical dilemma, or learn about alternative ethical frameworks?

 

[1] [https://en.wikipedia.org](https://en.wikipedia.org/wiki/Primum_non_nocere)

[2] [https://www.oxfordreference.com](https://www.oxfordreference.com/display/10.1093/oi/authority.20110803100345841)

[3] [https://en.wikipedia.org](https://en.wikipedia.org/wiki/Hippocratic_Oath)

[4] [https://www.youtube.com](https://www.youtube.com/shorts/yfd2Qs7GOlI)

[5] [https://pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/15778417/)

[6] [https://www.health.harvard.edu](https://www.health.harvard.edu/blog/first-do-no-harm-201510138421)

[7] [https://somnus-scientific.com](https://somnus-scientific.com/primum-non-nocere-first-do-no-harm/)

[8] [https://www.youtube.com](https://www.youtube.com/shorts/pbhSEioLF0k)

[9] [https://www.aafp.org](https://www.aafp.org/afp/2001/1215/p1942)