Henry Knowles Beecher (February 4, 1904 – July 25, 1976) was a pioneering American anesthesiologist, medical ethicist, and investigator of the placebo effect at Harvard Medical School. An article by Beecher's in 1966 on unethical medical experimentation in the New England Journal of Medicine — "Ethics and Clinical Research" — was instrumental in the implementation of federal rules on human experimentation and informed consent. A 1999 biography—written by Vincent J. Kopp, M.D. of UNC Chapel Hill and published in an American Society of Anesthesiologists newsletter—describes Beecher as an influential figure in the development of medical ethics and research techniques, though he has not been without controversy. The Beecher Prize, named in honor of Henry K. Beecher, is awarded annually by Harv