Continuing coverage: Although recent research has linked testosterone therapy with a higher risk for heart attack and stroke, a new study involving more than 25,000 older men suggests otherwise. The study, funded by the U.S. National Institutes of Health, may help ease some fears about testosterone therapy for patients and their families, the study authors said. "Our investigation was motivated by a growing concern, in the U.S. and internationally, that testosterone therapy increases men's risk for cardiovascular disease, specifically heart attack and stroke," said lead researcher Jacques Baillargeon, an associate professor of epidemiology at UTMB.