Changes in weight affect the size and shape; gaining weight may make breasts feel fuller, while losing weight may make them sag more. Health & Comfort Considerations

Around 20% of women report an increase in breast size after menopause, frequently associated with a rise in overall body weight and fat distribution.

As estrogen levels decline, the dense glandular tissue that produces milk shrinks, and is largely replaced by fatty tissue, which can change the texture and shape of the breast.