Why long stretch marks

Stretch marks refer to a phenomenon in which collagen fibers and elastic fibers in the dermal layer of the skin are damaged or broken, thus showing signs of skin breakage. Its occurrence is related to many factors. The most common reasons include glucocorticoid. Glucocorticoid secreted by adrenal gland will increase the fragility of elastic fibers and collagen fibers of the skin. Female adrenal secretion during pregnancy increases, when the skin elastic fibers and collagen fibers stretch to a certain limit, it will cause elastic fibers and collagen fibers break, the formation of stretch marks. The second point is physical factors, stretch marks will be inherited, stretch marks will be controlled by genetic genes, if the family has a genetic history of this pregnant woman, then the daughter shows the possibility of stretch marks is relatively large. The third point is that the belly is too large, the weight gain during pregnancy is normal, the weight gain during pregnancy is normal, but to maintain the growth of each month, but to maintain the weight of each month within two kilograms, the weight of the entire pregnancy period is maintained at 11~14 kilograms, so that the control of the skin is stretched to a certain extent, can reduce the degree and occurrence of stretch marks.