Declaration of Helsinki and Ethical Principles in Research

Definition, scope & authority

• Definition — The Declaration of Helsinki (DoH) is a statement of ethical principles for medical research involving human participants — including research on identifiable human material or data — developed by the World Medical Association (WMA). It is the most widely cited, authoritative, profession-derived statement of research ethics in medicine.
• Scope — Adopted by physicians, but the WMA holds the principles should be upheld by all individuals, teams and organizations involved in medical research; it applies to both patients and healthy volunteers. The 2024 title changed "Human Subjects" → "Human Participants" — signalling an active, respected partner, not a passive object of study.
• Legal status — guidance, not law — The DoH is a guide, not a statute — physicians are "not relieved from criminal, civil and ethical responsibilities under the laws of their own countries" (1964). It carries enormous moral/regulatory weight (referenced by ICH-GCP, CIOMS, regulators, journal editors) but acquires legal force only when incorporated into national law (India's NDCT Rules, the US Common Rule, the EU CTR).
• Two governing doctrines — (1) "Read as a whole" — no single paragraph may be quoted in isolation to justify an exception. (2) Primacy of the participant — the purpose of research is knowledge and health, but these "can never take precedence over the rights and interests of individual research participants" (¶8). The well-being of the subject takes precedence over the interests of science and society.
• Why a PG must know it — Every protocol, every IEC submission, every consent document and every trial publication must declare conformity with the Declaration of Helsinki — the protocol's ethical-considerations section is written "in accordance with the Helsinki Declaration" (Medhi).