Does Hormonal treatments cause infertility?

Established. A link with fertility is documented by numerous, converging human studies, endorsed by health authorities. Direct action on the hormonal axis of reproduction; the effect depends entirely on the molecule and the indication.

Hormonal treatments

Hormone therapy

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: Thyroid treatments, endometriosis treatments, prescribed testosterone, hormone replacement therapy.
Suspected mechanism: Direct action on the hormonal axis of reproduction; the effect depends entirely on the molecule and the indication.
Suggested alternative: Never stop a treatment on your own. Discuss it with the prescribing physician as part of a pregnancy plan.
Source: Summaries of product characteristics (ANSM, French medicines agency); HAS (French health authority) guidelines.

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Related factors

Including a factor does not mean it causes infertility: it is simply worth monitoring, depending on its level of evidence.

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Content last updated: September 14, 2026