WebMD explains the causes of gynecomastia, or enlarged male breasts, and in estrogen (a "female hormone" that men also have) and testosterone. go back to a more normal shape on their own, often within 2 to 3 years.
Learn about Breast enlargement in males or find a doctor at Mount Sinai Health System. caused by an imbalance of estrogen (female hormone) and testosterone (male hormone). They usually go away in 2 to 6 months, but can last longer.
Estrogen controls female traits, including the growth of breasts. Generally, the swollen breast tissue goes away within two to three weeks after.