Medical Ethics Pillars Overview

Jul 21, 2025

Overview

This lecture introduces the four pillars of medical ethics—autonomy, beneficence, non-maleficence, and justice—explaining their significance in medical school interviews and clinical practice.

Importance of Medical Ethics in Interviews

  • Medical schools assess your understanding of ethical principles due to their prevalence in clinical scenarios.
  • Ethical questions reveal your logical reasoning and awareness of key issues in medical practice.

The Four Pillars of Medical Ethics

Autonomy

  • Autonomy means a competent adult has the right to make decisions about their medical treatment.
  • Doctors must provide all relevant information so patients can make informed decisions.
  • Patients can accept or decline offered treatments but cannot demand any treatment not deemed suitable by doctors.

Beneficence

  • Beneficence requires doctors to act in ways that benefit the patient and promote their welfare.
  • What is considered beneficial may differ between the patient and the doctor, so patient beliefs should be considered.

Non-maleficence

  • Non-maleficence means "do no harm" and obliges healthcare workers to avoid causing harm or suffering.
  • Most treatments have risks, so doctors must balance benefits against potential harms.
  • The rule of double effect allows actions that may have harmful side effects if the primary intention is to do good.

Justice

  • Justice focuses on fairness in the distribution of healthcare resources and treatment.
  • Equal cases should be treated equally, but unequal cases may require different approaches.
  • Distributive justice addresses how limited resources are allocated and the issue of regional disparities in care (postcode lottery).

Application of the Four Pillars: Mock Question Example

  • Autonomy supports patient choice, but does not permit demanding all possible treatments.
  • Justice and limited resources mean not all treatments can be funded for everyone.
  • Beneficence supports doing good, but non-maleficence warns against unnecessary side effects from excessive treatments.
  • A balanced answer considers benefits, harms, resource limitations, and fairness.

Key Terms & Definitions

  • Autonomy — the patient’s right to make informed decisions about their medical care.
  • Beneficence — the ethical obligation to act in the patient’s best interest.
  • Non-maleficence — the duty to avoid causing harm to patients.
  • Justice — the principle of fairness in healthcare access and resource allocation.
  • Rule of Double Effect — an action with both good and harmful effects is acceptable if harm is not the main intent.

Action Items / Next Steps

  • Review practical applications of the four pillars in common ethical scenarios.
  • Practice answering mock interview questions using the four pillars to structure your responses.