The breast rests on the pectoralis major muscle and is held in position by the suspensory ligaments of Cooper — fibrous bands that run from the skin through the breast to the chest wall fascia, providing structural support. Over time, these ligaments stretch and the skin envelope loses its elasticity. The breast tissue descends, the nipple-areola complex moves to a lower position, the upper breast pole becomes depleted, and the lower pole becomes pendulous.

Primary causes of breast ptosis in Indian women:

• Pregnancy and breastfeeding — the single most common cause; breast engorgement during lactation stretches the skin envelope; weaning causes deflation of glandular tissue; the stretched skin does not fully recover — particularly after multiple pregnancies and prolonged breastfeeding
• Significant weight loss — including post-bariatric surgery weight loss, which frequently causes massive loss of breast volume and elasticity leaving pendulous, empty breast skin
• Ageing — oestrogen decline at menopause reduces glandular tissue and skin elasticity; gravitational forces act over decades
• Large cup size — women with naturally larger breasts experience faster ptosis development due to the greater gravitational load on Cooper’s ligaments; macromastia and ptosis frequently coexist
• Inadequate bra support — prolonged exercise or daily activities without a well-fitted, supportive bra accelerates Cooper’s ligament stretching