Researchers have identified a potential link between elevated blood levels of xylitol and increased cardiovascular health risks. Xylitol is a sugar alcohol naturally present in small amounts in some foods but is added to many commercial products including chewing gum, toothpaste, jam, yogurt, and ice cream, often in concentrations 1,000 times higher than natural levels.
The study, presented at the European Society of Cardiology annual congress in Munich, examined 17,710 individuals. Researchers compared those in the top 25% of blood xylitol levels with those in the bottom 25%. Over a six-year period, participants with the highest xylitol levels were 57% more likely to experience death, heart attack, or stroke compared to those with the lowest levels. Even after 30 years, this higher-risk group remained 18% more likely to have experienced one of these major cardiovascular events.
The research indicated a dose-dependent relationship, meaning cardiovascular event rates increased alongside xylitol blood levels. This pattern held consistently across different demographic groups regardless of age and sex, and remained independent of other risk factors such as body mass index, hypertension, diabetes, and lipid levels. Dr. Marco Witkowski, the study’s lead author from Charité university hospital in Berlin, noted that previous research had shown xylitol can enhance clotting ability in platelets.
Experts emphasized that while these findings warrant further investigation, the observational nature of the study means causality cannot be definitively established. Professor Dan Atar from the European Society of Cardiology noted that regulatory agencies have previously deemed artificial sweeteners safe, making these results particularly significant. Health professionals stressed the importance of reducing processed food consumption generally while cautioning against simply replacing xylitol-containing products with sugar-based alternatives, given ongoing concerns about excess sugar intake.
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