CASE RECORD · REAL HISTORY · ALL RECORDS
The Tuskegee Syphilis Study: 40 Years of Withheld Treatment
The US Public Health Service study that followed Black men with syphilis without treating them, and what changed after it was exposed.
Quick answer
What was the Tuskegee Syphilis Study?
The Tuskegee Syphilis Study was a US Public Health Service study that ran from 1932 to 1972 in Macon County, Alabama. It enrolled about 600 Black men, roughly 400 of whom had syphilis, and observed the disease without treating it, even after penicillin became the standard cure in the 1940s. The men were not told they had syphilis. It ended after a whistleblower went to the press in 1972.
Timeline
- 1932The Public Health Service begins the study with the Tuskegee Institute. The men are told they are being treated for "bad blood."
- 1947Penicillin is the standard treatment for syphilis. It is withheld from the men.
- July 1972After Public Health Service employee Peter Buxtun leaks the story, an Associated Press report exposes the study. It ends that year.
- 1974A $10 million settlement is reached, and the National Research Act creates new rules for research on human subjects.
- May 16, 1997President Bill Clinton formally apologizes on behalf of the US government.
What is documented, and what is not
On the record
- The study ran for 40 years and withheld effective treatment.
- Participants did not give informed consent.
- It led directly to modern US rules protecting human research subjects.
Disputed or unproven
- A widespread belief that the men were deliberately infected is not true for Tuskegee. That happened in separate US-run experiments in Guatemala in the 1940s.
Common questions
Were the men in the Tuskegee study given syphilis?
No. The men who had syphilis already had it when they enrolled. They were denied treatment. Deliberate infection occurred in separate US-funded experiments in Guatemala from 1946 to 1948.
How did the Tuskegee study end?
Peter Buxtun, a Public Health Service employee, gave the story to the press. An Associated Press report in July 1972 led to its end.
What changed because of Tuskegee?
The National Research Act of 1974 and the Belmont Report of 1979 created the system of ethics review that governs US research on people today.
Read the record yourself
- The Untreated Syphilis Study at Tuskegee: timeline ↗Centers for Disease Control and Prevention
- About the study ↗Centers for Disease Control and Prevention
Links go to official archives, museums, agencies and published research. Search links open the archive's own search for this topic.
THE FICTION BUILT ON THIS RECORD · FILE 069 · VOLUME XIIThey Called It Bad Blood. The File That Came After Was Worse.Some books are a debt. They are paid by telling. They grow by selling.Read the first pages free →Last reviewed 2026-10-13. This page covers the public record only. Archive files are dramatized and always marked as files.
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