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Progesterone and Notifications

Estrogen levels begin to increase during the first part of the menstrual cycle, follicular phase peak just before ovulation, and then decline slowly until they reach their lowest point at the onset of menses. The principal function of the estrogens is to cause cellular proliferation and growth of the tissues of the sexual organs and tissues related to reproduction. Progesterone is a hormone that prepares the lining of the uterus for the fertilized egg and maintains pregnancy. The name tells the story, pro motes gest ation horm one. Progesterone is derived primarily from the corpus luteum in the ovary after ovulation.

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