Gynecomastia is the swelling of the fat and breast tissue in the chest, more commonly known as man boobs, and a significant number of men will at some time experience this breast development. Typically man boobs occur temporarily during situations such as adolescence and other times of hormonal upheavals in the body. Older men who suffer from man boobs often do so as the result of hormonal drug abuse (steroids), from excessive weight or from imbalances in their hormones resulting from external h