Heavy metals in food
Mercury, cadmium, lead
🟢 A link with fertility is documented by numerous, converging human studies, endorsed by health authorities.
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In brief
heavy metals in food: this page reviews Heavy metals in food (Mercury, cadmium, lead) — documented mechanism, everyday exposure situations and possible alternatives. Level of evidence: Established.
- Where it's found
- Large predatory fish (tuna, swordfish), offal, tobacco (cadmium), and tap water passing through old pipes (lead, copper).
- Suspected mechanism
- Direct toxicity to reproductive cells and to the hormonal axis; lead is a recognized reproductive toxicant.
- Suggested alternative
- Vary the fish you eat and favor smaller species (sardine, mackerel): good nutritional intake, less mercury.
- Source
- ANSES (French agency for food, environmental and occupational health safety), fish and methylmercury exposure; WHO (lead).
Frequently asked questions
Heavy metals in food: how is it linked to infertility?
Direct toxicity to reproductive cells and to the hormonal axis; lead is a recognized reproductive toxicant.
Where is Heavy metals in food found in everyday life?
Large predatory fish (tuna, swordfish), offal, tobacco (cadmium), and tap water passing through old pipes (lead, copper).
How can exposure to Heavy metals in food be reduced?
Vary the fish you eat and favor smaller species (sardine, mackerel): good nutritional intake, less mercury.
What is the level of evidence for Heavy metals in food?
Established. A link with fertility is documented by numerous, converging human studies, endorsed by health authorities.
Map your everyday exposures in about ten minutes.
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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.
Content last updated: September 14, 2026