gynecomastia causes

Adolescent gynecomastia affects 20–30% of teenage boys, with most cases resolving spontaneously within a year. However, about 10% may develop persistent breast enlargement due to factors like obesity, chronic stress, and certain medications. Childhood obesity, if unaddressed, often continues into adulthood and raises the likelihood of gynecomastia. Moreover, research suggests that up to 30% of cases could be tied to a genetic predisposition, underscoring the importance of early lifestyle interventions and awareness of family history.