Every woman's youth is relatively short, so at this stage, many women begin to frantically supplement themselves with various vitamins to prevent their bodies from aging. Menstruation should occur about 14 days after ovulation, the corpus luteum atrophies, stops secreting estrogen, the endometrial blood vessels contract, the endometrium necrotizes and falls off, so menstrual blood will flow out. The normal menstrual cycle and hormones change, but if the body's hormones are unbalanced, the secretion of the corpus luteum and the compounding ability of progesterone are excessive, it will lead to the hypothalamus pituitary gland, affecting the normal development of follicles, so there will be a big difference between hormones and menstruation. Only when the hormones are normal can the menstrual volume and the time cycle be normal. About 14 days after ovulation, the corpus luteum atrophies and stops secreting estrogen and progesterone. At this time, the blood vessels in the endometrium contract, the endometrium necrotizes and falls off, causing bleeding and the formation of menstruation. The relationship between the changes in blood hormones during a normal menstrual cycle and the ovaries and endometrium is as follows: After the corpus luteum atrophies in the previous menstrual cycle, the secretion of estrogen and progesterone decreases, relieving the inhibition of the hypothalamus and pituitary gland. Gonadotropin-releasing hormone produced by the hypothalamus enters the anterior pituitary through the pituitary portal vein system, promoting the secretion and release of follicle-stimulating hormone and luteinizing hormone. Under the synergistic action of follicle-stimulating hormone and luteinizing hormone, the follicles in the ovaries gradually develop and mature, and produce estrogen, causing proliferative changes in the endometrium. After the follicles mature, the first peak of estrogen appears in the body. The increase in estrogen secretion produces a feedback effect on the hypothalamus and pituitary gland, inhibiting the production of follicle-stimulating hormone, promoting the increase in luteinizing hormone secretion, resulting in a luteinizing hormone peak and triggering ovulation. After ovulation, the corpus luteum is formed and secretes estrogen and progesterone. Under their combined action, the endometrium undergoes typical secretory phase changes. After ovulation, estrogen levels temporarily decrease, followed by a second, lower peak. The large amount of estrogen and progesterone secreted by the corpus luteum inhibits the hypothalamus and pituitary gland through negative feedback, causing the secretion of follicle-stimulating hormone and luteinizing hormone to decrease, and the corpus luteum begins to atrophy. After the corpus luteum atrophies, the secretion of estrogen and progesterone decreases, the endometrium loses the support of sex hormones, necrosis and shedding occur, and menstruation occurs. After the corpus luteum atrophies, the inhibition on the hypothalamus and pituitary gland is also lifted, causing gonadotropin-releasing hormone to be secreted again, and another menstrual cycle begins. |
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