Progestin breast

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There are eight different types of progestin that may be found in combination birth control pills along with estrogen typically ethinyl estradiol. The term progestin is used for any natural or man-made substance that has properties similar to natural progesterone. Progestins are categorized by generation, which indicates primarily when they were introduced to the market. To best understand how a progestin may be classified, it is helpful to clarify the types of effects a progestin may have on the female body :. In looking at the specific progestins, it's also helpful to define them by groups. Progestins are classified as first to fourth generation progestins based on when they were first available, but different generations also have some different characteristics.
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The Progestin-Only Birth Control Pill

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Progestin (Oral Route, Parenteral Route, Vaginal Route) Description and Brand Names - Mayo Clinic

The progestin-only birth control pill , also known as the minipill, is a type of oral contraceptive birth control pill. Each progestin-only pill contains a small amount of progestin which is a synthetic form of the hormone progesterone. These pills do not have any estrogen. Progestin-only birth control pills mainly prevent pregnancy by changing the consistency of your cervical mucus. The progestin thickens your mucus, and this makes it much harder for sperm to swim through. The minipill may also work by thinning the lining of your uterus.
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Women’s Health: 5 Ways Progesterone Affects Your Breasts

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