Sagging breasts may be caused by the following reasons: a. It may be caused by weight loss, especially if the previous weight is heavy and the weight drops too fast in a short period of time, making the fatty tissue in the breast suddenly decrease and the skin sagging. Two, may be due to breastfeeding caused by sagging, most women after the cessation of breastfeeding, milk is not secreted, the decline in hormone levels, mammary glands and breast fat tissue atrophy, but the skin support tissue is still more, there is breast sagging. This is an unavoidable situation: after the age of 35, all the functions of the human body begin to decline, leading to breast sagging. If you feel that sagging breasts affect the beauty, you can correct them through surgery.