Endocrine disruptors
Chemical substances able to interfere with the hormone system, found in some packaging, pesticides and containers, with worrying effects even at low doses.
Endocrine disruptors (EDs) are substances that mimic, block or alter the action of hormones. Well-known examples: bisphenols (BPA), phthalates, certain pesticides, PFAS (« forever chemicals »), parabens. They are found in food plastics, can linings, packaging, utensils and pesticides.
A fresh angle (the dose does NOT always make the poison): a feature that sets them apart from classic toxins, EDs can act at very low doses, and their dose-response relationship is not linear (« non-monotonic »). A low dose can sometimes have a different (even stronger) effect than a high dose, because the hormone system itself works at tiny concentrations. This upsets the classic toxicology principle that « the dose makes the poison ».
Periods of vulnerability (critical windows): exposure is particularly worrying during developmental windows (pregnancy, early childhood, puberty), when hormones orchestrate development. Exposure at these times can have lasting effects (developmental « programming »), even long afterwards.
Effects studied (associations): reproductive disorders and fertility problems, early puberty, certain hormone-dependent cancers, obesity and diabetes (the so-called « obesogens »), neurodevelopmental disorders. Many remain associations to be confirmed, but the body of evidence justifies caution.
Reducing your dietary exposure (practical steps):
- Avoid heating plastics (microwave, hot food in plastic): heat releases the migrating substances. Prefer glass or stainless steel
- Limit tinned food (inner lining) and heavily packaged foods
- Cut back on ultra-processed foods (more contact with packaging and additives)
- Favour fresh and organic food (fewer ED pesticides)
- Ventilate and dust (EDs build up in household dust)
- Do not store fatty foods in plastic (fat-soluble EDs migrate into them)
A nuance: it is impossible to eliminate exposure entirely (EDs are everywhere), but reducing it, especially during sensitive periods, is reasonable precaution. Avoid excessive anxiety while adopting simple habits.