 This is something that I think they've known about for a long time. It was a university study, and they looked at... It was University of Western Australia. They looked at 11 high-quality studies and meta-analysis looking at the effects of testosterone on lifespan. They followed men for about five years and found that participants with the lower T levels were likely to die earlier. I've heard of this before, though. Heart disease is still the leading cause of death in men globally. But they said that...