• Increased risk of prostate enlargement and cancer
  • Decreased testicular size
  • Gynecomastia (growth of breasts)


  • Increased risk of cervical and endometrial cancer
  • Increased risk of osteoporosis
  • Irreversible enlargement of the clitoris
  • Irreversible hoarsening and deepening of the voice
  • Irreversible increase in facial and body hair
  • Decreased breast size
  • Amenorrhea
  • Uterine atrophy

Where can I find more information about Steroids?
Fact sheets on anabolic steroids, other illicit drugs, and related topics can be ordered free, in English and Spanish, by calling NIDA Infofax at 1-888-NIH-NIDA (1-888-644-6432) or, for those with hearing impairment, 1-888-TTY-NIDA (1-888-889-6432).
Information on steroid abuse also can be accessed through the NIDA Steroid Abuse Web Site ( Information on illicit drugs in general can be accessed through NIDA’s home page ( or by contacting the National Clearinghouse for Alcohol and Drug Information (NCADI) Web Site (

NIDA: Research Report Series: Anabolic Steroid Abuse


Jon Daily, LCSW, CADC II

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