The consumption of common preservatives linked to food safety may be associated with a higher risk of several cancers and type 2 diabetes, according to two new studies from France, reports BritPanorama.
These findings have emerged from the long-running NutriNet-Santé study, which began in 2009, involving over 170,000 participants. The researchers analyzed dietary reports alongside medical data stored in the French national healthcare system. Senior author Mathilde Touvier indicated that the significance of these findings extends to both French and American food markets.
The cancer study, published in The BMJ journal, examined the effects of 58 preservatives on around 105,000 participants who had completed detailed dietary questionnaires. Those with the highest intake of preservative-laden foods were compared to those consuming the least. The analysis highlighted that sodium nitrite, commonly found in processed meats, was associated with a 32% increased risk of prostate cancer, while potassium nitrate was linked to a 22% increase in breast cancer risk.
Cancer and preservatives
In-depth analysis showcased that 11 out of the 17 preservatives reviewed had no significant relationship to cancer risk. However, six preservatives, including sodium nitrite and potassium sorbate, often recognized as safe by the US Food and Drug Administration, exhibited concerning associations with increased cancer risk. Potassium sorbate, for instance, was associated with a 26% increased risk for breast cancer and a 14% rise in overall cancer incidence.
Sodium metabisulfite, commonly used in winemaking, correlated with a 20% increase in breast cancer, while other additives such as acetic acid also showed alarming links, including a 12% increase in the risk of all cancers. Although the study’s authors emphasized the need for cautious interpretation, they noted that these results amplify existing concerns regarding preservatives in food.
The type 2 diabetes study, published in Nature Communications, examined nearly 109,000 NutriNet-Santé participants who were free of the disease at the outset. Twelfth of the 17 preservatives were linked with an almost 50% greater likelihood of developing type 2 diabetes among those who consumed the highest levels. Notably, the same preservatives identified as contributing to cancer were implicated again, underscoring their potential health risks.
Type 2 diabetes and preservatives
Specific antioxidants, like alpha-tocopherol and sodium erythorbate, also surfaced as potential contributors to this increased risk. Anaïs Hasenböhler, the study’s first author, underlined that these research efforts warrant further validation and could inform future regulatory adjustments regarding food additive safety to enhance consumer protection.
The findings point to a pressing need for a thorough re-evaluation of food preservation practices, particularly given that the global food supply widely incorporates such additives. As the implications broaden, further research will likely shape ongoing discussions about public health and dietary safety.
