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Oral contraception: First Following the work of Chang and Djerassi and others, Gregory Pincus, the Director of the Worcester Foundation for experimental Biology had developed an effective contraceptive pill by 1957. The Pincus team, including Chang, began a systematic study, in the nineteen-fifties, of more than two hundred substances with varying effects on such things as ovulation, menstruation, and conception. One substance gestagen type, called "norethynodrel," formed the basis of the first large-scale trial of the contraceptive pill, a trial carried out in Puerto Rico in 1956. The gestagens, however, gave poor control over menstruation, a problem overcome by combining the gestagen with a synthetic oestrogen. It was a combined pill of this type (marketed commercially as Enovid) that proved so successful in the Puerto Rican trial. Now there are literally dozens of contraceptive pills available. From The Illustrated Book of Sexual Records. © 1974, 1982, 1997-2001 G.L. Simons Back to Home Page Other Categories   Human Physiology     Sexual Techniques and Peformance   The Arts Abberant Sex and Deviations Animals and plants Contraception and Castration Sexology Prudery, Superstition and the Law Looking for a "hot" date? Something naughtier? ABC Fantasy Dating Hot videos, DVDs? All tastes, and streaming video! Try Adult Videos & DVDs World Sex News On nudity, pornography Erotica, Orgasms, Lesbians Click here See Also World Sex News Erotic Awards Sex Maniacs Ball Sexual Freedom Coalition Encyclopedia of Unusual Sex Practices Catastrophism!

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