Common additives in processed foods tied to hypertension and heart disease in large study
A study of over 112,000 French adults found that heavy consumption of eight widely used preservatives was associated with higher rates of high blood pressure and cardiovascular disease. The observational research cannot prove causation, but it is the first to examine a broad range of preservatives in humans. The findings were published in the European Heart Journal.
The NutriNet-Santé cohort tracked more than 112,000 French volunteers through detailed three-day dietary records submitted every six months, with follow-up spanning seven to eight years. Nearly all participants—99.5 percent—consumed at least one preservative during the initial two-year observation window, underscoring how pervasive these additives are in modern food supplies.
The analysis examined 17 distinct preservatives and identified eight with notable associations. Those consuming the most non-antioxidant preservatives faced a 29 percent higher hypertension risk and 16 percent higher cardiovascular disease risk compared to lowest consumers. Antioxidant preservative intake correlated with a 22 percent higher hypertension risk. Researchers emphasized the observational design cannot establish direct causation.
This study could reshape how consumers and regulators view processed food ingredients, given that preservatives appear in hundreds of thousands of products. If confirmed by further research, these findings may pressure food manufacturers to reformulate products and prompt health agencies to revisit additive safety guidelines. The nearly universal exposure means virtually all processed-food consumers could be affected, though individual risk levels would depend on consumption patterns and other health factors.