The increasing pace of life makes many women too busy to pay attention to their own health care, and they neglect their breasts. Ask yourself quietly, are you familiar with your breasts? The breast is a symbol of beauty unique to women. The beautiful women created by the masters and painters of the past generations are all with a pair of full breasts. Women’s breasts not only play a role in breastfeeding, but also play an important role in the activities of both sexes. Women’s breasts and nipples are rich in nerve endings, and when men touch and stimulate women’s breasts, they can arouse female lust and generate sexual excitement. For women, full and firm breasts are a symbol of maturity and sexiness; for men, women’s breasts have an eternal allure. A, the appearance of the breast Adult unproductive women, the breast is hemispherical, tense and elastic. During late pregnancy and lactation, the breasts increase significantly because of breast enlargement. When breastfeeding stops, the mammary glands shrink and the breasts become smaller. In older women, the breasts can sag because of the reduction of elastic fibers. If a woman’s breasts appear larger on one side and smaller on the other from the outside, and the nipple on one side is raised while the nipple on the other side is slightly invaginated, and this has always been the case, not just recently, and without discomfort, then this is normal. If both breasts show significant asymmetry, there are two situations: 1. congenital factors During embryonic development, if one breast develops abnormally, in future adolescent breast development, both breasts will be significantly asymmetrical, and the side with poor development will be significantly smaller than the healthy side. Generally speaking, this situation will not affect marriage, childbirth, but the loss of the unique curves of women’s beauty. 2, acquired factors usually occur in menstruating mothers. When breastfeeding, mothers are often accustomed to breastfeeding on one side of the direction of the breast, so that both sides of the breast lactation opportunities are not equal, the side with more opportunities after weaning, more likely to atrophy and degeneration than the opposite side and become smaller. This situation is generally uncomfortable and does not affect life. If both breasts were roughly symmetrical in the past and there is a new asymmetry, such as an increase in the size of one breast, a change in the color of the skin of one breast or a small depression in the skin, retraction or elevation of one nipple, sometimes accompanied by pain, itchiness, nipple overflow and other signs and symptoms, a lesion may occur.