Anabolic Steroids are usually taken orally or injected into the muscle.
Steroids are used for many reasons including to treat medical conditions, however; when abused can be very dangerous.
Some effects of these on the body include decreasing the body's responsiveness to other drugs making tolerance of those drugs, messes with the body's production of it's natural hormones, negative effects on the pathways in the brain causing effects on mood and behavior, aggression and other psychiatric problems ("roid-rage")
for more information visit NIDA's website or copy and paste the link to your browser:
http://www.drugabuse.gov/publications/research-reports/anabolic-steroid-abuse