Menstruation is the exfoliation and bleeding of the endometrium that accompanies the ovarian cycle, and there are many reasons for excessive menstrual flow and clots. When there is endocrine hormone imbalance, especially high estrogen, which can cause persistent endometriosis and then menstruation, it can cause excessive menstrual flow and blood clots. Second, when there are fibroids, uneven endometrial echogenicity, endometrial polyps, due to these diseases, it will cause excessive menstrual volume and will be accompanied by blood clots. For example, occasionally there is 1, heavy menstrual flow, which can be related to the diet before menstruation, including the environment and stress. When you eat spicy and stimulating food before your period, including cold and raw food, excessive stress may also cause excessive menstrual flow. Third, when there is ovarian hypofunction, when ovarian function is abnormal, this time will also be accompanied by increased menstrual volume, accompanied by blood clots.