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Explain the process of menstruation.
Menstruation, also known as a period or monthly, is the normal and regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina.
It occurs due to the rise and fall of hormones, which results in the thickening of the lining of the uterus, and the growth of an egg. When the egg is released from an ovary around day 14 in the cycle, the thickened lining of the uterus provides nutrients to an embryo after implantation.
If pregnancy does not occur, the uterus, or womb, sheds its lining and it passes out of the body through the vagina which is commonly known as menstruation.
Periods normally start between ages 11 and 14 and continue until menopause at about age 51. It usually lasts from 3 to 5 days.
Common symptoms and signs of this cycle include acne, bloating, sore breasts, feeling tired, food cravings, mood changes, irritability, lower back pain, headache, and fatigue.
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