Many women are very confused, every time the “period” came, diarrhea followed by the chase, this situation is very common in life, the reasons for this situation, as follows: 1, weak body cold: women’s menstrual period body resistance decreased, the body is the weakest, the gastrointestinal tract function is also very poor, the gastrointestinal tract is easily stimulated by diarrhea. Stimulation of diarrhea. This is especially serious for women with anemia. 2, the influence of prostaglandins: the endometrium is affected by prostaglandins during menstruation, contraction spasms lead to dysmenorrhea, the prostaglandins produced during this period act on the intestinal tract, will also cause the gastrointestinal tract muscles to produce mild contraction spasms, resulting in increased intestinal peristalsis, resulting in the symptoms of diarrhea. 3, hormonal changes: In addition to prostaglandins, changes in estrogen and progesterone, as well as changes in endorphin levels can also affect the gastrointestinal tract, resulting in diarrhea. 4, physiological changes: During menstruation, the pelvic cavity is congested and the sacral nerve is stimulated and excited, which further excites the gastrointestinal tract and promotes its peristalsis, producing diarrhea. Most of the diarrhea that accompanies menstruation is physiological, adjusting the diet is sufficient, and generally does not require special treatment, but if serious diarrhea occurs, be alert to pathological factors and seek medical treatment in a timely manner.