Male Breast Reduction (Gynecomastia) While not often mentioned, enlarged male breasts is a common affliction. Gynecomastia has an effect on about forty to 60 % of men. There's no identified trigger for gynecomastia, although There was some correlation with different medicines or medical problems. Breast reduction is typically not included https://grok.com/share/c2hhcmQtMw%3D%3D_f3cd42a4-69f0-4155-a0c3-9639e0113f4a