Gynecomastia is a common condition in men and boys. About half of adolescent boys and as many as two-thirds of men older than 50 will have this to some degree.
When a boy is going through puberty, or when an older man’s body makes less testosterone, the balance of the two hormones changes.
Sometimes when that happens, a higher percentage of estrogen causes male breast tissue to swell.
How Does It Happen?
A lot of things such as weight gain, medications, and thyroid conditions can trigger the hormone imbalance that causes male breast growth, and many times the exact cause isn’t known.
Before & After*