AIDS: The loss of lean body mass (LBM) that is commonly associated with wasting syndrome has been linked to death in HIV disease. Bioelectrical Impedance Analysis (BIA) is a simple, inexpensive and painless technique used to assess body composition. The test gives a good reading of body cell mass, fat mass, and body water, and can be used to detect loss of LBM when it first occurs. BIA is a useful tool in managing and preventing wasting. Other factors that influence LBM include testosterone levels and anabolic steroids. Anabolic steroids, synthetic analogs of testosterone, are a Class III regulated drug. The use of anabolic steroids is controversial, and abuse by athletes led to the drugs being banned for many uses. A list of approved steroids, their actions, and potential problems associated with their use is included. Another table rates the major steroids for their effectiveness in AIDS therapy.