Gynecomastia

Gynecomastia

Gynecomastia is a condition of overdevelopment or enlargement of the breast tissue in men or boys. The breasts become larger. They may grow unevenly.

Gynecomastia often happens when a preteen or teenage boy is going through the hormonal changes of puberty. But it can also happen to newborn babies and to men as they age. Gynecomastia is an overdevelopment or enlargement of the breast tissue in men or boys.

The breasts become larger. They often grow unevenly.

It is often caused by changes in levels of the female hormone (estrogen) and the male hormone (testosterone). Other things may cause it as well.