Teenage boys with big breasts are caused by hormonal changes during puberty. It usually goes away within 6 months to 2 years after Adults. For adult men, as women, mostly caused by conditions such as lung cancer, liver cancer, liver disease, thyroid disease thyroid hormone or due to problems such as prostate cancer, or cancer of the testicles. alcohol, methamphetamine and marijuana thyroid can also cause men like women. The use of some medications can also cause big men like :

    Steroid drugs
    For the healing of ulcers
    Medicines for treating seizures
    Certain heart medications
    By chemotherapy in cancer treatment
    Some psychiatric medications.