Performance-enhancing supplement use in patients with testicular cancer

Supplement use is common and increasing among patients with testicular cancer. The use of exercise performance-enhancing supplements was as great as 20%. Given the increasing incidence of testicular cancer, coupled with the widespread use of these performance-enhancing supplements in this at-risk group, additional study is required to determine what association, if any, exists between the use of these substances and the development of testicular cancer.