The dangers of breast nails can lead to localized infections, obstruction of the milk ducts, and in severe cases, sagging of the breasts, which later affects breastfeeding. What are the dangers of breast nails 1. Infection: If the wound is not properly cared for, it may lead to local infection and local inflammation. 2. Mammary duct obstruction: because of the piercing in the nipple may lead to part of the mammary duct obstruction phenomenon. 3. Sagging of breasts: After the nipple piercing, the blood circulation of breasts may be affected, which may lead to sagging of breasts. 4. Impact on breastfeeding: the late blockage of the milk ducts will lead to the accumulation of milk during the breastfeeding period, which will cause breast hyperplasia and the formation of lumps. There are many hazards of breast nailing, and usual breast care is indispensable to prevent the hazards of breast ptosis.