Research from France indicates that commonly used preservatives found in a variety of store-bought foods could heighten the risk of high blood pressure and cardiovascular issues. According to the study, there is a 29% higher risk of elevated blood pressure and a 16% increased risk of experiencing heart attacks or strokes linked to these preservatives.
Interestingly, even natural preservatives, like citric acid and vitamin C (ascorbic acid), were associated with a 22% rise in high blood pressure in individuals whose diets included more of these ingredients.
Mathilde Touvier, who led the research at the NutriNet-Santé study, explained in an email that while antioxidants can be naturally occurring, their effects can be different when they are used as preservatives. She also highlighted that naturally sourced and chemically manufactured ascorbic acid may impact health differently.
The influence of such food additives on cardiovascular health is noteworthy, particularly as ultraprocessed foods have raised alarms for their public health implications. Tracy Parker from the British Heart Foundation mentioned that the new findings complement established concerns regarding ultraprocessed foods, which have been linked to a higher risk of cardiovascular diseases.
Ultraprocessed foods have also been connected to significantly elevated risks of obesity, sleep disorders, and type 2 diabetes, all of which are traditionally related to heart health challenges.
Parker noted that this study is unique as it examines individual preservatives, rather than classifying all ultraprocessed foods together. There has always been concern about their unhealthy content, but this research helps clarify why they may be more harmful than expected based on nutritional criteria alone.
However, the research team acknowledged that ultraprocessed foods account for a fraction of preserved foods consumed, suggesting that preservatives are widespread in various foods. Anaïs Hasenböhler, the lead author, emphasized that there isn’t a single food group to avoid but rather a recommendation for consumers to lean toward minimally processed options.
For instance, she encouraged choosing fresh or frozen foods, which are preserved by freezing rather than additives. The study assessed data from over 112,000 participants, tracking consumption of 58 preservatives over years against health records from France’s national healthcare system.
Within the analysis, certain preservatives showed a correlation with increased blood pressure over the years. For example, potassium sorbate, commonly found in various foods, and sodium nitrite, prevalent in processed meats, were among those linked to these health risks.
Experts indicate that findings around nitrates and similar compounds aren’t entirely surprising given their known links to heart disease. Gunter Kuhnle, a food and nutritional scientist, pointed out that while preservatives play a vital role in food safety and shelf life, the study’s insights could prompt individuals to reconsider their food choices.
The study’s results align with earlier research by Touvier’s team, which also highlighted connections between preservatives and heightened risk for conditions like cancer and type 2 diabetes. Despite the observational nature of this new research, the robust methodology used provides grounds for further exploration into the health impacts of these additives.
In conclusion, while the findings do suggest potential links between specific preservatives and health risks, further research is necessary for a definitive understanding of cause and effect in this complex area of dietary studies.
