US Public Health Service

That the US government ran a study in which Black men with syphilis were deliberately left untreated to observe the disease's progression, and were lied to about it.

The Public Health Service enrolled 399 Black men with syphilis in Macon County, Alabama in 1932, telling them they were being treated for "bad blood". When penicillin became the standard cure in 1947, it was withheld. Investigators actively intervened to prevent participants receiving treatment elsewhere, including from the military draft board.

Accounts are deliberately not collected here. This entry documents a historical case rather than a circulating remedy.

This is established fact, not allegation. The study ran until 1972, when PHS employee Peter Buxtun leaked it to the Associated Press. It ended because of the resulting outcry, not because of internal review. It produced the National Research Act, the Belmont Report and the modern informed-consent framework. President Clinton issued a formal apology in 1997. Its documented effect on Black Americans' trust in medicine persists and is measurable in vaccination and clinical-trial participation rates.