Four Pillars of Medical Ethics Explained

Four pillars of medical ethics

The four pillars are autonomy, beneficence, non maleficence and justice. They are the framework most often used to think through an ethical problem in medicine.

Updated 12 October 2026 (1 minute read)

Summary

They come from Principles of Biomedical Ethics by Tom Beauchamp and James Childress, first published in 1979.
Autonomy means respecting the patient's right to decide.
Beneficence means acting in the patient's best interests.
Non maleficence means avoiding harm.
Justice means treating people fairly and sharing resources fairly.
No pillar outranks the others. Most hard cases are hard because two of them point in different directions.

Interview questions

What are the four pillars of medical ethics?
Which pillar do you think matters most, and why?
Give an example of a situation where two of the pillars conflict.

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Cases that turn on it

ADHD and autism overdiagnosis debate Autonomy Far more people in England are diagnosed with ADHD and autism than 25 years ago. People disagree over whether ordinary difficulties are being given medical labels, or people who were missed for years are at last being recognised. A government review reported on 9 October 2026 that it could not show overdiagnosis on a large scale, partly because the data are out of date. It wants help to be given on need, without waiting for a diagnosis.

Corridor care in NHS hospitals Autonomy Corridor care means looking after patients in corridors, waiting rooms and other parts of a hospital never built for it, because every bed is full. The government and NHS England both call it unacceptable. NHS England still counted about 3,300 patients a day in September 2026.

Vaping and the generational smoking ban Autonomy Fewer than one in ten UK adults now smoke, and more people in Great Britain vape than smoke. Vapes help smokers quit, but about 1.1 million people who never smoked use them too. Under a law passed in April 2026, nobody born in 2009 or later will be sold tobacco from January 2027.

More NHS hot topics, medical ethics case studies and medical school interview questions are in AlphaMED Resources, which we add to and update through the application cycle.