Some men take testosterone hoping to boost energy and libido, or to build strength. But at what risk? iStockphoto hide caption itoggle caption iStockphoto Shots - Health News Popular Testosterone Therapy May Raise Risk Of Heart Attack January 30, 2014 Men who take testosterone supplements double their risk of heart attacks, a study finds. That was true for men over 65 and for younger men with heart disease. Testosterone supplements have become increasingly popular as a way to counter flagging libido.