Emulsifiers in Ultra-Processed Foods Linked to Potential Health Risks

Emerging research suggests that certain food additives, specifically emulsifiers commonly found in ultra-processed foods, may have negative impacts on gut health and potentially increase the risk of heart disease and type 2 diabetes.

Emulsifiers are used to bind ingredients like water and oil, creating smooth textures and extending shelf life in products such as ice cream, sauces, and baked goods. While safety checks are conducted before approval, these typically involve animal studies and offer limited insight into long-term human health effects, particularly concerning the gut microbiome. Dr. Emily Leeming notes that “the long-term effects of food additives on humans isn’t fully understood due to a lack of research.” A recent study involving 60 healthy volunteers showed that emulsifiers like carboxymethyl cellulose and polysorbate-80 lowered levels of short-chain fatty acids, crucial for gut health and immunity.

However, the study also found that not all emulsifiers pose the same risk; soy lecithin and rice starch did not demonstrate significant negative effects. A 2023 study published in the BMJ, analyzing data from nearly 95,000 adults in France, linked celluloses, monoglycerides, and diglycerides of fatty acids to a 3 to 11 percent higher risk of heart disease. Further research, including the ADDapt trial led by King’s College London, indicated that reducing emulsifier intake improved symptoms in nearly half of Crohn’s disease patients – a condition characterized by inflammation of the digestive tract. You can learn more about inflammatory bowel disease from the Mayo Clinic.

Despite these findings, researchers emphasize that the most concerning emulsifiers are rarely used in the UK food supply, appearing in a small percentage of supermarket products. Focusing on a diet rich in whole foods – fruits, vegetables, beans, and whole grains – is considered a more effective strategy for supporting gut health and minimizing exposure to ultra-processed foods. This growing body of research is prompting a re-evaluation of food additive safety standards and the potential impact of ultra-processed diets on public health.

Officials are continuing to monitor emerging research and will update food safety guidelines as needed, emphasizing the importance of a balanced diet.