Anabolic steroids are synthetic substances related to the male sex hormones (androgens). They promote muscle growth and can be used to treat hormone deficiencies such as delayed puberty and some types of cancer. Anabolic steroids are available legally only tren for sale by prescription, but they are often abused by bodybuilders and athletes who want to build muscle mass and improve athletic performance.

Anabolic steroids work by mimicking the effects of the male sex hormone testosterone. Testosterone is responsible for the development of male characteristics, such as increased muscle mass and deepened voice. It also helps to maintain the correct ratio of male and female hormones in the body.