Gynecomastia is a common condition involving the development of enlarged breasts that can affect men at different stages in life. Although the exact cause of gynecomastia for each individual is unknown, potential contributors include a hormonal imbalance, testosterone deficiency, genetics, certain medications, weight fluctuations or significant weight loss, use of anabolic steroids, and impaired liver function.
Some cases can occur in adolescents and improve after puberty, while others may not appear until adulthood, in which lifestyle changes may help to reduce or eliminate symptoms. Fortunately, if the condition persists, gynecomastia can be highly treatable by surgically removing excess tissue and fat to provide firmer, flatter chest contours.



