Get evaluated by a doctor to confirm gynecomastia and rule out other causes
Review medications, supplements, alcohol, cannabis, and anabolic steroid use with a clinician
Treat any underlying cause such as hormonal imbalance, thyroid disease, liver disease, or testicular issues
Lose excess body fat if overweight
Build chest and upper-body muscle with resistance training
Stop using anabolic steroids and other hormone-altering substances
Consider prescription treatment only under medical supervision
Consider surgery if the tissue is persistent, painful, severe, or not responding to other treatment
Seek urgent medical care if there is a hard lump, nipple discharge, rapid growth, or one-sided swelling