One of the most frightening breast deformities is the asymmetry of the left and right breasts. Asymmetry in women’s breasts not only affects the beauty of the surface, but also brings a greater shadow to women psychologically. The reason for breast asymmetry: a. Congenital factors: In the process of embryonic development, if one breast starts to develop abnormally, in the future adolescent breast development, both breasts will be obviously asymmetric, the stunted side will be significantly smaller than the healthy side. Generally speaking, this situation will not affect marriage or childbirth, but the unique curves of women will be lost. Therefore, after the complete development of the breast in adolescence, you can choose to perform breast augmentation with implants, so that the original flat side of the breast and the healthy side as full, to restore the female style and self-confidence. Second, acquired factors: usually occurs in women who have given birth and nursed children. When breastfeeding, mothers are often accustomed to breastfeeding on one side of the direction of the breast, so that the two 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 condition is generally uncomfortable and does not affect life. You can exercise the pectoral muscles on the side of the smaller breast, and massage the smaller breast, and if necessary, use topical breast enhancement drugs or equipment. Of course, this can be avoided if, when breastfeeding, attention is paid to alternate breastfeeding on both sides and equal opportunities. In addition, there is another reason for asymmetric breast development is habitual sleep position, long-term leaning to one side of the sleeping girls will also appear asymmetric breast development phenomenon. Third, the sports factor: breast asymmetry sports habits, sports posture, sports volume and other circumstances. For example, some people use one side of the arm more in labor or sports, this side of the pectoral muscles are developed, it can make the appearance of the breast left and right height difference. This is usually due to the fact that the breast buds on the side that is more sensitive to estrogen and progesterone in the body develop first and grow faster and appear larger; the breast buds on the side that is less sensitive appear smaller due to delayed development and slower growth. As the breasts mature, the two sides will gradually become symmetrical. It is not uncommon for both breasts to be temporarily different in size, so there is no need to worry about this, let alone intervene surgically, but to wait patiently. There are often slight differences between the two breasts after maturity, generally the right side is larger than the left side, but the appearance is difficult to distinguish and can only be detected by careful measurement. However, there are a few young women who show obvious differences that are aesthetically displeasing and can be corrected by strengthening the exercise of the left pectoral muscle. The method is usually consciously use the left hand to lift and hold heavy objects, not only can the left pectoral muscles, increase breast, and more left arm, can promote the development of the right hemisphere of the large chest, making you smarter. In addition, you can also use your right hand to lightly press the left breast, massage in a clockwise direction, three times a day, 30 times each time, can also play a role in increasing the breast. When the left side is larger than the right side, you can symmetrically massage the right mammary gland with the left hand. After the body has matured and the body has been shaped, if there is an abnormal disparity between the two sides of the breast, and the above self-correction method is ineffective, surgery can be considered for correction. For unilateral breasts that are significantly smaller than normal. Silicone breast implants or fat filling can be used; for breasts with excessive growth of breast tissue on one side that far exceeds the normal size of the other side, the excess breast tissue on that side can be removed to make both breasts close in size. If ordinary simple treatment does not work, surgery is usually an option after adulthood. It is important to note that if both breasts were approximately symmetrical in the past and there is a new asymmetry, such as enlargement of one breast, change in skin color or small depressions in the skin of one breast. Special attention should be paid to the symptoms and signs such as retraction or elevation of the nipple on one side, sometimes accompanied by pain, itchiness, and watery nipples. In this case, you should see a doctor immediately for relevant tests to detect possible lesions as early as possible.