It is widely believed that testosterone therapy for men with low testosterone can lead to an increased risk of prostate cancer. Dr. Abraham Morgentaler, associate clinical professor of urology at Harvard Medical School and author of the book Testosterone for Life, recalls the fascinating story of how this idea of high testosterone levels increasing the risk of prostate cancer originated, and suggests that in fact, the opposite might be true. What evidence supports boosting testosterone levels in men with low levels of the hormone, and that this might not raise a man's risk of developing prostate cancer? Hosted by Dr. Maurice Pickard.