Use of Synthetic Hormones To Control Menstruation
Since the late 1960s, many women have chosen to control the frequency of menstruation with long-acting hormonal birth control, often simply called 'the pill'. They are most often combined hormone pills containing estrogen and are taken in 28 day cycles, 21 hormonal pills with either a 7 day break from pills, or 7 placebo pills during which the person menstruates. Hormonal contraception acts by using low doses of hormones to prevent ovulation, and thus prevent conception in sexually active females. But by using placebo pills for a 7-day span during the month, a regular bleeding period is still experienced.
Injections such as depo-provera became available in the 1960s. Progestogen implants such as Norplant in the 1980s and extended cycle combined oral contraceptive pills in the early 2000s.
Using synthetic hormones, it is possible for a person to completely eliminate menstrual periods. When using progestogen implants, menstruation may be reduced to 3 or 4 menstrual periods per year. By taking progestogen-only contraceptive pills (sometimes called the 'mini-pill') continuously without a 7-day span of using placebo pills, the menstrual period is eliminated entirely. Some people do this simply for convenience in the short-term, while others prefer to eliminate periods altogether when possible.
Read more about this topic: Menstruation
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