Alcohol
Regular or heavy consumption
Evidence level : Established LifestyleMechanism : Environmental / physical burden
🟢 A link with fertility is documented by numerous, converging human studies, endorsed by health authorities.
- Where it's found
- Daily consumption, repeated aperitifs, episodes of heavy drinking.
- Suspected mechanism
- Disruption of the hormonal axis and direct, dose-dependent toxicity to gametes.
- Suggested alternative
- Reduce frequency first rather than aiming for zero immediately; abstinence is recommended during pregnancy.
- Source
- Santé publique France (French national public health agency); ESHRE (European Society of Human Reproduction and Embryology).
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