A girl’s first period, or a woman’s first menstrual period, is called a menarche, and like usual menstrual blood, it is mostly dark red, and may be brown or coffee-colored at the beginning and near the end of the period.
The menarche is caused by estrogen stimulating the endometrium to proliferate. The endometrium proliferates to a certain extent, resulting in the shedding of the endometrium and the onset of menstruation.
As the ovarian function of girls is not fully mature at this time, the sex hormones do not have a fixed rhythm, so the menstruation at menarche may not be too normal, the bleeding of menarche is not obviously different from the usual menstruation, in the menstruation just started to come or almost finished when it may be a small amount of brown or dark black secretion, menstruation when the amount of mostly dark red non-clotting blood.
When a girl has her first menstruation, it represents the step into puberty, and she should actively learn about menstrual health care to ensure that she is physically healthy during menstruation. At the same time, increase the intake of protein, calcium, vitamins and other nutrients to capture the second growth spurt of puberty.