A steroid is a biologically active organic compound with four rings arranged in a specific molecular configuration. Steroids have two principal biological functions: as important components of cell membranes which alter membrane fluidity; and as signaling molecules.
Oral steroids, also referred to as Corticosteroids, are synthetic drugs that mimic the hormone cortisol naturally produced by the adrenal glands. They work by tempering a hyperresponsive immune system, reducing inflammation either locally (in a specific part of the body) or systemically (throughout the entire body).
Anti-obesity medication or weight loss medications are pharmacological agents that reduce or control weight. These medications alter one of the fundamental processes of the human body, weight regulation, by altering either appetite, or absorption of calories.
Anabolic steroids, also known more properly as anabolic–androgenic steroids, are steroidal androgens that include natural androgens like testosterone as well as synthetic androgens that are structurally related and have similar effects to testosterone.