What are Steroids? Anabolic steroids are synthetically produced variants of the naturally occurring male hormone testosterone that are abused in an attempt to promote muscle growth, enhance athletic or other physical performance, and improve physical appearance. Anabolic steroids are often used illegally to build muscle. But corticosteroids are used to treat a variety of health problems. Learn more about steroids. Steroids are man-made medicines similar to natural body hormones, used to treat many conditions. They reduce inflammation and the activity of the immune system. Steroids come in various forms, including oral tablets, creams, nasal sprays, and inhalers. Side-effects are more common with oral steroids or long-term use. The journal focuses on both experimental and theoretical studies on the biology, chemistry, biosynthesis, metabolism, molecular biology, physiology and pharmacology of steroids and other molecules that target or regulate steroid receptors. Prednisone is a prescription corticosteroid (steroid) used to reduce inflammation, suppress an overactive immune system, and treat endocrine and metabolic disorders. Many of the clinical roles of steroids are related to their potent antiinflammatory and immune-modulating properties. This review summarizes the basic pharmacology, complications, and practice delivery issues regarding steroids. Clinically relevant side effects of steroids are common and problematic. Hundreds of steroids are found in fungi, plants, and animals. All steroids are manufactured in cells from sterol precursors: cholesterol and lanosterol (in opisthokonts), or cycloartenol (in plants). All three of these molecules are produced via cyclization of the triterpene squalene. [4] Steroid medicines (sometimes referred to as corticosteroids) are man-made (synthetic) versions of steroid hormones produced by the body. There are several different forms of steroid medicines. The form discussed in this leaflet is the tablet form, taken by mouth, called oral steroids. Many types of steroids exist. Learn about the different types, what they are used for, and safety considerations. How do corticosteroids work? Corticosteroids help lessen swelling and irritation, called inflammation. The medicine can ease symptoms of inflammatory conditions, such as arthritis, asthma and skin rashes. Corticosteroids also lower immune system response.