Gynecomastia, the medical term for male breast enlargement, can make a man feel extremely self-conscious and also affect his libido, or even cause erectile dysfunction (ED). Knowing what causes gynecomastia and understanding the link between this condition and ED can give men insight into how to improve their sex life and achieve greater well-being.

Generally defined as any type of breast enlargement in men, gynecomastia is a noncancerous excess of male breast-gland tissue that an estimated 30 percent of males will experience at least once in their life, according to a study. Men with this condition usually have swollen, enlarged breasts that resemble a female’s.

Gynecomastia usually isn’t life-threatening, but it can contribute to low self-esteem, depression, emotional distress and reduced quality