Menstrual bleeding is the result of female follicular maturation, ovulation and corpus luteum formation, and the endometrium changes from hyperplasia to secretion and endometrial shedding. This process is realized by estrogen and progesterone produced by neuroendocrine system, so changing any part of hormone production will cause menstrual changes. From a medical point of view, the color of menstrual blood depends on the speed and amount of bleeding, which is related to the iron on hemoglobin in red blood cells.
So what is the color change of normal menstrual blood?
At the beginning of menstruation, the endometrium falls off slowly, with less menstrual flow, mostly reddish or brown; After 1-2 days, the amount is more, mainly bright red or dark red, lasting for 2-3 days; The final outcome is very small, whether it is brown or brown.
Generally speaking, menstrual bleeding is a process of less first and then more, and finally ends; There are also many, bright red or dark red, and then slowly end. No problem, as long as the menstrual flow is about 20-60ml in 3-7 days before and after.
The causes of abnormal menstrual color are varied and complicated, including genetic problems, endocrine problems and immune problems. Therefore, it is necessary to go to the hospital to do relevant examinations, find out the possible causes, and try our best to treat the causes in order to achieve better results. Moreover, abnormal menstruation may have an impact on fertility, so if there is a problem, seek medical advice as soon as possible.