Does Heated food-contact plastic cause infertility?

Probable. Several human studies point the same way, with a plausible biological mechanism, but the evidence is not yet conclusive. Heat significantly increases the migration of plasticizers (bisphenols, phthalates) into food, and therefore real-life exposure.

Heated food-contact plastic

Plasticizer migration

Evidence level : Probable KitchenMechanism : Hormonal disruption burden

🟡 Several human studies point the same way, with a plausible biological mechanism, but the evidence is not yet conclusive.

Where it's found: Trays reheated in the microwave, plastic wrap over hot dishes, bottles left in the sun.
Suspected mechanism: Heat significantly increases the migration of plasticizers (bisphenols, phthalates) into food, and therefore real-life exposure.
Suggested alternative: Transfer food to a glass plate or dish before reheating. A simple habit with immediate effect.
Source: EFSA, migration from food-contact materials.

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Related factors

Pesticide residuesPlant protection products
Heavy metals in foodMercury, cadmium, lead
PhthalatesEndocrine disruptors (plasticizers)

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

Back to all sheets Understand the evidence levels

Content last updated: September 14, 2026