Does gynecomastia resolve itself?

Sometimes, but...: Pubertal gynecomastia often resolves within 1 to 3 years after onset. Adult onset gynecomastia however does not necessarily do so. If persistent, it is often best treated with partial excision of the prominent glandular tissue as well as liposuction surgery of the peripheral chest area. If the prominence of the chest wall is caused by adipose tissue, then liposuction surgery may suffice.

Not Usually: Gynecomastia are accumulation of breast tissue in men. They are not a function of fat and working out your pectoral muscles will not eliminate them. If you truly have gynecomastia, it will need to be corrected by a plastic surgeon once the underlying causes have been ruled out.

Typically not: Unless it is mostly fat and you are very over weight.