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French Studies Link Food Additives to Increased Cancer and Diabetes Risk

Published January 8, 2026, 09:17
French Studies Link Food Additives to Increased Cancer and Diabetes Risk

Two new French studies, published in BMJ and Nature Communications, link the consumption of certain food preservatives to a slightly increased risk of cancer and type 2 diabetes. The first study found associations between preservatives and cancers, particularly breast and prostate cancer. The second study showed associations between preservative consumption and the onset of type 2 diabetes. Researchers, studying data from over 100,000 French people, found that the consumption of sorbic, sulfurous, and nitrous preservatives was associated with a higher incidence of cancer. In particular, the consumption of sodium nitrite (E250) is linked to an approximately one-third increase in the risk of prostate cancer. Although the studies do not prove a direct causal link, their strong methodology provides significant evidence in this direction. The consumption of potassium sorbate (E202) is associated with a doubled incidence of type 2 diabetes. Researchers advocate for public health policies that promote foods with fewer preservatives and additives, given that the negative effects of ultra-processed foods are becoming increasingly well-documented. Although the risk at the individual level is limited, at the collective level it can lead to a significant number of additional illnesses.