Definition of a drug:
Any substance which, when taken into the body, alters the body's function physically and/or psychologically; excluding food, water and oxygen.
Description of drugs:
Steroids: Steroids are derived from the male sex hormone testosterone. This drug assists in the growth and repair of tissue. Steroids will also increase the development of male sex characteristics. Injecting steroids into the body is the most popular way to take it, however it may also be taken orally.
…
