40-60 percent of men have breast that appear more like women's breasts. Although this condition is not discussed often, it's quite common. There is no known cause for the vast majority of cases of gynecomastia, a small percentage have been linked to certain drugs and medical problems. If you feel self-conscious about your appearance, a breast-reduction surgery can help improve your look. The surgery removes fat and/or glandular tissues from the breasts. This results in a flatter, firmer and better contoured chest.