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Fertile Period Discovery
Scientists conclude that pregnancy can be prevented by avoiding intercourse during the fertile period. -
The Pregnancy Test
Scientists create the pregnancy test. -
Identification of Progesterone
Scientists identify progesterone, the ovarian hormone. -
Identification of Estrogen
The human sex hormone estrogen was identified. -
Feminine Hygiene was Normalized
The term “feminine hygiene” was used to sell contraceptives. -
Birth Control is Considered a Medical Practice
Sanger fights against a Japanese shipment of diaphragms to the U.S. and the court rules in favor. Allowing contraceptive devices and information via mail and recognizes birth control as a medical practice. -
The Diaphragm
The diaphragm is the most effective and expensive form of birth control available in America. Women relied less effective douches for contraception. -
Hormonal Birth Control
Russell Marker made synthetic progesterone with Mexican wild yams discovering progesterone production. Now the basis for hormonal birth control. -
Improvements in Contraceptives
Americans spent around $200 million a year on contraceptives. Anti-birth control laws restricted people from "exhibit, sell, prescribe, provide, or give out information" about condoms. -
Human Trials
Human trials had to be executed for FDA approval. 50 women were involved. -
Pincus and Rock: The First Birth Control Pill
Not one of the 50 women in the trial ovulated while on the pill. Scientist's research proved that progesterone pill inhibits ovulation The birth control pill was born. -
FDA Approved
The first birth control submitted for FDA approval in America.