"Dr. Morgentaler, an internationally recognized expert in sexual medicine and male hormones, shares his secrets for a healthy life."

--Irwin Goldstein, M.D. , Director of Sexual Medicine, Alvarado Hospital, San Diego, and Editor-in-Chief, Journal of Sexual Medicine "A highly valuable resource. Finally debunks many of the myths about testosterone's safety, which has been an impediment to its appropriate usage for far too long."

--David E. Greenberg, M.D. , President, Canadian Society for the Study of the Aging Male From a Harvard doctor and a leading expert on testosterone--the groundbreaking book that shows you how to raise your testosterone levels--and live your life to the fullest Better sex. Increased vitality. More muscle. Improved health. Greater mental agility. These are just a few of the life-enhancing benefits that men with low levels of testosterone can experience when they increase their testosterone level. If you've noticed a decrease in your sex drive; experienced erectile dysfunction; or felt tired, depressed, and unmotivated, this authoritative, up-to-date guide from an expert at Harvard Medical School will help you determine if you have low testosterone--a surprisingly common but frequently undiagnosed condition among middle-aged men. Learn how to: