Anabolic steroids
Exogenous androgens
Evidence level : Established Medication & treatmentsMechanism : Medication burden
🟢 A link with fertility is documented by numerous, converging human studies, endorsed by health authorities.
- Where it's found
- Bodybuilding products, non-prescribed testosterone, doping supplements.
- Suspected mechanism
- They cut off the pituitary signal that drives sperm production: spermatogenesis can stop, sometimes for several months.
- Suggested alternative
- No use is safe for fertility. Medical support allows for a supervised discontinuation and monitored recovery.
- Source
- Endocrine Society; literature on AAS-induced hypogonadism.
Map your everyday exposures in about ten minutes.
Take the questionnaireRelated factors
Including a factor does not mean it causes infertility: it is simply worth monitoring, depending on its level of evidence.
Content last updated: September 14, 2026