The men involved in the study were given free meals, medical exams, and burial insurance. They did not receive the right treatment to cure their illness. The study was supposed to last for 6 months but lasted 40 years. They failed to share all their knowledge with the patients. Researchers did not give informed consent and did not minimize harm in their studies.
The researchers study was on untreated Syphilis in Back men.
The Tuskegee Experiment is arguably the most infamous biomedical research study in U.S. history.
The result of this experiment led to federal laws and regulations requiring the IRB. This was for the protection of humans in studies like this one. Many participants, their wives, and their children died from this.