Which principle means do no harm?

• A. Beneficence
• B. Nonmaleficence
• C. Justice
• D. Fidelity

Answer: (B)

Nonmaleficence is the principle that means do no harm. In healthcare, it requires clinicians to avoid actions that could injure a patient, to minimize risks, and to refrain from interventions where the potential harm outweighs any possible benefit. It guides decisions about whether to proceed with treatments, particularly when the risks are significant or uncertain. This principle is balanced with beneficence (which focuses on promoting the patient’s good), but nonmaleficence specifically centers on preventing harm. The other terms describe different duties—beneficence is about doing good, justice is about fairness, and fidelity is about keeping promises and maintaining trust.