How does sudden menstruation amount return a responsibility less

The main reasons for the sudden decrease in menstrual blood volume include, first, frequent use of emergency contraceptives, the endocrine system secretion of gonadotropin function is suppressed, and then cause ovarian secretion of estrogen levels insufficient, resulting in the performance of hypomenorrhea. Second, due to thyroid disease, resulting in hyperthyroidism, or hypothyroidism, affecting the endocrine system function, resulting in sudden decrease in menstrual blood volume. Third, because excessive weight loss caused by excessive consumption of subcutaneous fat, so that estrogen levels in the body decreased, resulting in menstrual blood loss. Fourth, during menstruation eat cold food, or rain, take a cold bath, suddenly show menstrual blood loss, or even stop symptoms.