Most of the menstrual disorders caused by weight loss can be restored to normal through self-regulation. The lack of menstruation due to weight loss may be caused by the lack of fat content due to excessive dieting, which reduces estrogen synthesis and causes endocrine disorders. Generally speaking, maintaining a reasonable diet, eating more lean meat, beans and fresh fruits and vegetables and other scientific dieting can achieve the purpose of restoring menstruation. If your menstruation does not resume after a period of time, you need to go to a gynecologist to take blood tests to understand the condition of the ovaries and to do an ultrasound to understand the thickness of the uterine lining, and then under the guidance of a doctor to treat the condition according to the symptoms. The weight loss should be scientific and reasonable, step by step, should not be excessive diet, a reasonable diet with appropriate exercise to achieve the purpose of healthy slimming.