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Decreased serum testosterone concentration
- NIH-Supported Trials Test Hormonal Therapy in Older Men with Low Testosterone Levels (National Institute on Aging)Sexual Problems in Men/Statistics and Research ... Sexual Problems in Men ... Men's Health/Statistics and Research ... Men's Health ... National Institute on Aging ... From the ...
- Anabolic Steroids and Other Appearance and Performance Enhancing Drugs (APEDs) (National Institute on Drug Abuse)Anabolic Steroids/Learn More ... Anabolic Steroids ... National Institute on Drug Abuse ... From the National Institutes of Health ... Anabolic steroids are synthetic variations ...