There is no clinical evidence to suggest that sagging breasts can lead to breast cancer. Breast ptosis is a normal physiological phenomenon of the human body, mostly due to the decline of the body, the loss of skin collagen and fat tissue, resulting in the creation of gaps in the fibrous tissue, so that the breast loses the support of fat and leads to ptosis. If there is no lump near the breast, there is no risk of breast cancer if the breasts simply droop. Breast cancer is a malignant tumor that occurs in the epithelial tissue of the breast. The breast is a target organ for a variety of endocrine hormones, of which estrone and estradiol are directly related to the development of breast cancer. Women with a family history of breast cancer, who have never given birth or who have given birth late are prone to breast cancer. Common symptoms of breast cancer include breast lumps, nipple discharge, a small dimple in the breast skin, abnormal nipple areola and enlarged lymph nodes in the armpit. There are also signs of lethargy, fatigue, weakness, having low-grade fever and poor appetite. If patients are diagnosed with breast cancer, they should go to the hospital in time and receive reasonable treatment under the guidance of doctors to avoid delaying the condition and causing adverse consequences.