THURSDAY, March 7, 2019 (HealthDay News) -- High testosterone levels can drastically increase a man's risk of heart failure and stroke-causing blood clots, a new study reports.
Men with a genetic predisposition to high testosterone levels have a nearly eightfold increased risk of heart failure and twice the risk of thromboembolism (blood clots that can block veins or arteries leading to the brain or lungs), researchers found.
Although the study focuses on men with naturally high testosterone, it has implications for aging men who are taking testosterone supplements to boost their energy levels and improve their sex drive, experts said.
Testosterone sales increased 12-fold globally between 2000 and 2011, particularly in the United States, the researchers said in background notes.
"This study serves as a big, red stop ...