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Gregory Pincus
Reproductive Biologist
Developer of the first oral contraceptive pill who conducted human trials on Puerto Rican women without informed consent
Overview
Gregory Goodwin Pincus (1903-1967) was an American biologist and researcher who, along with gynecologist John Rock, developed the first oral contraceptive pill. Funded by Margaret Sanger and Katharine McCormick, Pincus chose to conduct large-scale clinical trials in Puerto Rico specifically because the territorial colonial status allowed experimentation that would have been illegal on the mainland. Over 1,500 women in Puerto Rican housing projects were given experimental high-dose hormone pills without being told they were part of a clinical trial. Three women died during the trials and no autopsies were performed. When medical director Dr. Edris Rice-Wray reported that the pill caused "too many side reactions to be generally acceptable," Pincus dismissed her findings as psychosomatic and marginalized her from the project.
Key Affiliations
Controversies & Concerns
Chose Puerto Rico as clinical trial site specifically because its colonial status and poverty enabled research that mainland laws and ethics prevented
Over 1,500 women in housing projects were not told they were part of an experimental drug trial; no informed consent process existed
Dismissed adverse reaction reports from the medical director of the Puerto Rico trials as psychosomatic
Three women died during the Puerto Rico trials; no autopsies were performed to determine if deaths were drug-related
The high-dose formulation tested (10mg norethynodrel) was approximately 10 times higher than modern contraceptives
Marginalized Dr. Edris Rice-Wray from the project after she reported the pill was unacceptable due to side effects
Related Investigations (1)
Known Associates & Connections
John Rock
Harvard gynecologist who partnered with Pincus to develop Enovid and conducted early trials
Margaret Sanger
Activist who recruited and funded Pincus to develop the contraceptive pill
Sources & Documentation
2 documented sources from official records, investigations, and reports
Personal Information
- Born
- 1903-04-09
- Birthplace
- Woodbine, New Jersey
Education
- •Cornell University (B.S., 1924)
- •Harvard University (M.S., Sc.D., 1927)
Key Timeline
1951
Recruited by Margaret Sanger to develop an oral contraceptive pill
1953
Begins small-scale trials on psychiatric patients in Massachusetts
1955-04
Moves trials to Puerto Rico to bypass mainland legal restrictions and obtain compliant test population
1956
Dr. Edris Rice-Wray reports pill causes "too many side reactions to be generally acceptable"; Pincus dismisses findings
1960-06-23
FDA approves Enovid for contraceptive use based largely on Puerto Rico trial data
1967-08-22
Dies of myeloid metaplasia at age 64; never faced any legal consequences for the Puerto Rico trials