2, regular dieting to lose weight makes the body's nutrition unbalanced, especially when the total fat is less than 20% of the body weight, menstrual changes will occur, such as decreased menstrual flow and prolonged menstrual cycle. Suggest scientific weight loss.

3, but also pay attention to whether you are in the process of dieting and losing weight, and suffer from other endocrine disorders, which leads to delayed menstruation. It is suggested to draw blood and check HCG in clinic to rule out pregnancy, and also to understand the endocrine situation and then deal with it according to the results.