Breasts develop and undergo changes at different stages of a woman’s life – they begin to grow with puberty, undergo many changes during the menstrual cycle, develop milk glands during pregnancy and lose their elasticity and begin to sag with age.
As a girl reaches her adolescence, fat and connective tissues start to accumulate, making the breasts larger and fuller. The milk glands and ducts continue to grow and mature with menstruation. During pregnancy, this fat tissue makes way for the maturation of the milk producing glands, which are needed for breastfeeding. The hormones oestrogen and progesterone control the growth and development of the breasts across a woman’s life. As a woman reaches menopause, the levels of oestrogen begin to drop, and connective tissues begin to shrink. The breasts lose their elasticity, fullness and shape, and start sagging.