@health_explaining: Birth control pills work by using synthetic versions of natural hormones, usually estrogen and progestin (or sometimes progestin alone), to control how the reproductive system behaves. These hormones keep the body in a state that mimics being already pregnant, which signals the brain to stop releasing the hormones that trigger ovulation. Without ovulation, there is no egg released for sperm to fertilize, which is the main way the pill prevents pregnancy. They also change the physical environment of the reproductive tract in a few important ways. One major effect is that they thicken the mucus in the cervix, making it much harder for sperm to enter the uterus and reach an egg. At the same time, they thin the lining of the uterus, which makes it less likely for a fertilized egg to successfully implant even if fertilization were to occur. To work properly, birth control pills need to be taken consistently, usually once every day. When taken correctly, they maintain steady hormone levels in the body so the system stays “switched off” for ovulation. If pills are missed, hormone levels can drop, which may allow ovulation to occur and reduce effectiveness. #biology #medicalstudents #tiktok #education #Medical

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Saturday 04 July 2026 05:23:03 GMT