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Heat-based contraception. An alternative male contraceptive method involves heating the testicles so that they cannot produce sperm. Sperm are best produced at a temperature slightly below body temperature. The muscles around a male's scrotum involuntarily tighten if the man's body temperature drops, and they loosen, allowing the testes to hang ...
Hormonal contraception refers to birth control methods that act on the endocrine system. Almost all methods are composed of steroid hormones, although in India one selective estrogen receptor modulator is marketed as a contraceptive. The original hormonal method—the combined oral contraceptive pill —was first marketed as a contraceptive in ...
Ovulatory shift hypothesis. The ovulatory shift hypothesis holds that women experience evolutionarily adaptive changes in subconscious thoughts and behaviors related to mating during different parts of the ovulatory cycle. [1][2] It suggests that what women want, in terms of men, changes throughout the menstrual cycle.
Estrous cycles start after sexual maturity in females and are interrupted by anestrous phases, otherwise known as "rest" phases, or by pregnancies. Typically, estrous cycles repeat until death. These cycles are widely variable in duration and frequency depending on the species. [2]
The copper IUD (also known as a copper T intrauterine device) is a non-hormonal option of birth control. It is wrapped in copper which creates a toxic environment for sperm and eggs, thus preventing pregnancy. [2] The failure rate of a copper IUD is approximately 0.8% and can prevent pregnancy for up to 10 years.
Marthe Voegeli was a Swiss physician and pioneer in the field of male contraceptive research. Between 1930 and 1950, Voegeli practiced medicine in India at her own private hospital. During this time, with the assistance of 9 volunteers, she experimented with a process of heat-based contraception. [1] The process was simple and effective.
History of birth control. The history of birth control, also known as contraception and fertility control, refers to the methods or devices that have been historically used to prevent pregnancy. [1] Planning and provision of birth control is called family planning. [2] In some times and cultures, abortion had none of the stigma which it has ...
Effective and safe forms of birth control became available in the United States in the 20th century with advances in science that led to the advent of safe methods and various Supreme Court decisions, including Griswold v. Connecticut in 1965 and Eisenstadt v. Baird in 1972, that struck down "Comstock laws" that imposed government restrictions ...