Where does the concept of informed consent in medical ethics primarily derive from?

• A. The Belmont Report.
• B. The Nuremberg Code states that the voluntary consent of the human subject is absolutely essential; informed consent is standard.
• C. The Declaration of Helsinki.
• D. The Hippocratic Oath.

Answer: (B)

Informed consent in medical ethics is rooted in the idea that individuals have autonomy and should freely decide what happens to their own bodies. The strongest historical anchor for this is the Nuremberg Code, developed after World War II in response to atrocious experiments. It states that voluntary consent of the human subject is absolutely essential and that participants should be given enough information to make an informed decision, with the freedom to decline or withdraw at any time. This sets the baseline standard that doctors and researchers must disclose relevant information and obtain a genuine, voluntary agreement before proceeding. Later documents like the Declaration of Helsinki expand on how consent should be obtained in medical research, and the Belmont Report formalizes consent as a core element of respect for persons in U.S. ethics guidelines. The Hippocratic Oath contributes general ethical principles like nonmaleficence, but it does not establish informed consent as a formal requirement.