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Why progesterone can be used as a contraceptive pill?

Progesterone is a hormone that plays a key role in regulating the menstrual cycle and maintaining pregnancy. It can be used as a contraceptive pill because of its ability to prevent ovulation. When progesterone is taken as a contraceptive pill, it thickens the mucus in the cervix, making it difficult for sperm to travel through. It also thins the lining of the uterus, making it less likely for a fertilized egg to implant. In addition, progesterone can also inhibit the growth of the endometrium, making it less receptive to implantation.

Combination contraceptives, which are pills that contain both progesterone and estrogen, are also commonly used as a form of birth control. The combination of hormones works by preventing ovulation, thickening cervical mucus, and thinning the lining of the uterus.