A major study of around 260,000 women shows that taking the progesterone-only contraceptive pill can increase asthma attacks in some women. The research, published in ERJ Open Research, shows an ...
Combination birth control pills contain both estrogen and progesterone. The hormones prevent pregnancy by stopping ovulation and changing the lining of your uterus (womb) and your vaginal discharge to ...
More recent research shows that progesterone-only contraception — including intrauterine devices (IUDs) and the so-called mini pill — may also raise breast cancer risk, possibly even more so than ...
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