These stimulate the development of male sexual characteristics and the build up of muscle tissue. These are legal to possess for personal use. But for supplying/trafficking only they are classed as a Class C drug. Dangers When misused these substances can have the following effects: In males - acne; aggression; violent unacceptable sexual behaviour; impotence; kidney damage; development of breasts; premature baldness. In females - development of male features; irregular periods; more hair growth on face and body; deepening of the voice; increased aggression. In adolescents-severe acne on face and body; stunted growth. Some anabolics have a stimulant effect. They enable people to recuperate faster so that they can train longer and harder, causing muscles to develop more quickly future opportunities. Long term use may lead to liver, kidney, heart and circulatory problems. Confusion, depression, paranoia and delusions may also be experienced. Steroids are not physically addictive, but are often psychologically addictive.