General

• Testosterone; Muscle with Attitude: Online muscle building magazine with many articles.
• Steroid Law: Criminal Trial Lawyers site on the effects of anabolic steroids and legal issues.
• Mesomorphosis: muscle, bodybuilding, anabolic steroids, fitness, nutriton, supplementation.
• Commercially Marketed Supplements for Bodybuilding Athletes: originally appearing in Sports Medicine 15(2) 90-103. 1993.
• Steraloids Inc.: Chemical structures and information for research only.
• Anabolic Steroid Control Act of 2004: bans prehormones, reviews sentencing guidelines, and provides grant for anabolic steroid education.
• Wall Street Journal: Just Sitting Back to Get in Shape: Two Pills Do the Work of Exercise.
• PoWeRusa.org: Testosterone & Anabolic Steroids articles and links.

Genetic Doping

• Scientific American Article: Elite athletes are eyeing gene therapy to enhance performance
• Muscle: The Myostatin Connection: Myostatin expression in animals and bodybuilders
• Myostatin: notes and research overview.
• Muscle boundless: Gene doping is shaping up as next big issue in debate over performance enhancers
• Genetic mutants, Belgian Blue pictures: A | B | C
• Freaky Huge: Perhaps a human genetic mutant?

NBC Interviews Tim Ferriss on Barry Bonds and Drugs in Sports

Also see the National Geographic's Science of Steroids.