One study showed an increase in heart attacks and strokes in men who used common low dose hormone replacement. It's theorized that the change in viscosity of blood is the contributing factor. It makes the blood thicker. It increases blood pressure. The FDA has also warned about the side effects. Now imagine what the quantities of testosterone anabolic steroids bodybuilders use can do to the heart? Imagine the blood pressure spikes with people with steroid induced high blood pressure when they lift weights?
Guys that are steroid junkies love to rationalize the risks to health away and dismiss them. It's all about having people look at them and praise them for being a "man". They all know what they really look like without the assist. They are all training experts as they show you their temporary drug physique. They know without the assist no one in their right mind would want to look like them.