Prevalence of gynecomastia at various chronologic ages showing peaks at puberty and in older males. The data are derived from multiple population studies.
Data from Braunstein GD. Gynecomastia. In: Diseases of the Breast, Harris JR, Lippman ME, Morrow M, Hellman S (Eds), Lippincott-Raven, Philadelphia 1996. p.54.