Risks/benefits

* Male hypogonadism is etiologically heterogeneous, broadly classified as: primary (hypergonadotropic) hypogonadism due to testes failure (e.g. from genetic conditions, trauma or gonadotoxic insults); secondary (hypogonadotropic) hypogonadism due to hypothalamic-pituitary disorders (e.g. tumors...

Shalender Bhasin, M.D., Professor of Medicine at Harvard Medical School, and Director, Boston Claude D. Pepper Older Americans Independence Center; Director, Brigham Research Assay Core Laboratory; Director, Research Program in Men's Health: Aging and Metabolism; and Co-Director, The Center for...