According to the American Society for Reproductive Medicine, about half of all cases of infertility involve an element of male infertility. Male infertility is solely responsible for 20-30 percent of infertility cases and is a contributing cause, along with a female factor, in another 20-30 percent of cases.In this segment, Robert D. Oates, MD., joins the show to discuss some of the causes of male infertility and the treatment options available at Boston Medical Center.