Over the better part of this century, athletes have sought to increase the natural performance of their bodies by using various means. And while most opted for the development of their muscle mass by using standard techniques, such as lifting weights, running, or other methods, some started taking to artificial substances. These substances, anabolic-androgenic steroids, most commonly known just as steroids, are actually a derivate of the testosterone male hormone. There can be severe side effects, including elevated blood pressure, changes in cholesterol levels, and cardiovascular disease, as well as coronary artery disease.