Menstruation is the periodic shedding of the functional layer of the endometrium under the action of estrogen and progesterone during menstruation. Some women will experience clinical symptoms of dysmenorrhea due to excessive sensitivity. The reason why girls wear sanitary pads during menstruation is because menstrual blood flows out during menstruation. Not wearing sanitary pads will contaminate clothes and pants, and bacteria will enter the genitourinary system, which can play a protective role.
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