Weight loss is generally carried out in two ways: exercise and medication. If medication is used to lose weight, it will affect endocrine secretion to a certain extent, which will cause menstrual disorders and thus the absence of menstruation; while exercise is used to lose weight, which destroys the muscle ratio for maintaining menstruation or fat loss, which will cause abnormal menstruation. Regardless of the way to lose weight, it may cause the phenomenon of non-menstruation.