By definition steroids are natural or synthetic specialized pharm substances used to imitate the effect of testosterone and its derivatives. Besides, they improve protein synthesis and increase lean muscle mass. They are usually prescribed to treat a number of serious diseases like AIDS and cancer as well as a variety of hormone disorders. There are several groups of anabolic steroids which will be mentioned below.
Still they are also widely used in aesthetic and sporting purposes, for instance, in bodybuilding. Both amateurs and professional sportsmen have used and continue taking steroids before the competitions for better results and shape. However, this magic transformation has a long list of side effects and high health risks. In such aesthetic cases steroids are not officially prescribed as they do not refer to medical treatment. Contemporary steroids market is being updated with less harmful natural alternatives and improved supplements with a reduced number of side effects.