Male breasts are referred to as man boobs, the medical term is gynecomastia. Gynecomastia comes from the Greek terms "gyne" and "mastos," which when translates to woman-like breast. It is the enlargement of a man's breasts caused from hormonal imbalances or hormonal therapy.
This physical condition that affects the male gender usually occurs during puberty. This abnormal enlargement is caused by a disc shaped tissue in the breast tissue under the areola. It may affect only one or both breasts and serious problems and has been linked to disease in rare cases.