What are the main things that cause man boobs?

I’ve never really been overweight. I put on a few pounds in college like most people, but I’ve always considered myself normal weight. I suffer from man boobs though and I want to know what causes this. Is it just genetic? My dad doesn’t have man boobs.


M, 45, South Dakota

Tags:man age 35-44 chest breasts too large gynecomastia causes

Gynecomastia, or "man boobs", is due to excess breast tissue in a male.  Causes include hormonal imbalances, medication side-effects,  and genetics.  Many cases are "idiopathic", which means you have it and we don't know why you have it.  Fortunately, gynecomastia is very correctible with a simple surgical procedure.  After ruling out other causes of the gynecomastia, the surgical procedure involves a small incision with removal of the breast tissue, and often liposuction to contour the surrounding areas.  It is an outpatient procedure with a 5-7 day recovery.

Dr. Gary Breslow has 1 Gynecomastia reduction before & after:

Gynecomastia reduction before image performed by Dr. Gary D. BreslowGynecomastia reduction after image performed by Dr. Gary D. Breslow

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