Is less menstrual flow harmful to the body? Less menstruation is actually a common manifestation of irregular menstruation. Under normal circumstances, the amount of menstrual bleeding per woman is about 60 ml, more than 80 ml is too much, and less than 30 ml means less menstrual flow. The harm of less menstrual flow to the body is mainly manifested in the following points: 1, gynecological inflammation: irregular menstruation has brought serious harm to women's health. Such as menstrual arthritis, rash, menstrual toothache, menstrual asthma, endometrial displacement, cervicitis and so on. 2, can directly lead to infertility: irregular menstruation in women is the direct cause of infertility. Headache can cause: Headache is a common disease. As far as its incidence is concerned, women are more than men, which is related to the unique physiological characteristics of women. Epidemiological investigation shows that the headache related to menstruation accounts for about 20% of female headaches. 4, it will cause spots and acne, which will affect the appearance: these spots and acne can not be solved by cosmetics, because they are a reflection of physical diseases, especially irregular menstruation and some external manifestations of diseases such as cancer and cirrhosis.