ASRM / ReproductiveFacts The American Society for Reproductive Medicine has patient-focused resources on male fertility. ASRM website
NICHD — Men’s Reproductive Health Resources The U.S. National Institute of Child Health and Human Development links to a variety of men’s reproductive health topics. Men’s Reproductive Health Resources
Brigham & Women’s Hospital — Male Infertility Information from a major academic hospital on causes, when to see a specialist, and what tests are done. Male Infertility