Anabolic androgenic steroids (AAS) are members of a class of natural and synthetic steroid hormones that promote cell growth and division.These hormones result in growth of many types of body tissues, especially muscle and bone. Most anabolic androgenic steroids have varying combinations of androgenic and anabolic qualities, and are often referred to AAS (anabolic/androgenic steroids).
To briefly touch base on history of anabolic steroids, they were first discovered in 1930s. Anabolic steroids have been used for many medical purposes including stimulation of bone growth, appetite, puberty, and muscle growth. The most common use of anabolic steroids is their ability to deal with chronic wasting conditions including cancer and AIDS. As all hormones, anabolic steroids can produce numerous physiological effects including increased protein synthesis, muscle mass, strength, appetite and bone growth.