Peptides are defined as a compound of two or more amino acids in which a carboxyl group of one is united with an amino group of another. With the elimination of a water molecule, a peptide bond is formed. To put it more simply, peptides are just small proteins. When the number of amino acids are less than 50, these are peptides. When higher than 50, these are proteins. The peptides are therefore small chains of amino acid which are present in all cells of the body. There are several kinds of peptides: oligopeptides, polymers, proteins, neuropeptides and peptide hormones. These are synthesized naturally by the body. Peptides will therefore be used primarily to make a more abundant amount of hormones in the body. The latter will then produce new hormones such as Testosterone or corticosteroids. It is these two hormones that are considered anabolic or indirect anti-inflammatory.
Even though anabolic steroids do not cause the same high as other drugs, they can lead to addiction. Studies have shown that animals will self-administer steroids when they have the chance, just as they do with other addictive drugs. People may continue to abuse steroids despite physical problems, high costs to buy the drugs, and negative effects on their relationships. These behaviors reflect steroids' addictive potential. Research has further found that some steroid users turn to other drugs, such as opioids, to reduce sleep problems and irritability caused by steroids.