Xylitol Sweetener Linked to 57% Higher Heart Attack Risk in Major Study

A major study presented at the European Society of Cardiology Congress found that people with the highest blood levels of xylitol face a 57% greater risk of heart attack, stroke or death within six years compared to those with the lowest levels. The research, which analysed 17,710 participants across two large population studies, suggests a dose-dependent relationship: the more xylitol in the blood, the higher the cardiovascular risk. Xylitol is added to sugar-free chewing gum, mints, toothpaste, jam, yoghurts and ice-cream, often in amounts 1,000 times higher than naturally occurring levels.

What the study found

Researchers from Charité University Hospital in Berlin examined data from the Canadian Longitudinal Study on Aging and the European Prospective Investigation into Cancer and Nutrition-Norfolk study. In the six-year follow-up, participants in the highest xylitol quartile were 57% more likely to experience a major adverse cardiovascular event (heart attack, stroke or death) than those in the lowest quartile. Even after 30 years in the second cohort, the highest xylitol group remained 18% more likely to suffer these events. The association held true regardless of age, sex, body mass index, hypertension, diabetes or cholesterol levels.

How xylitol enters the bloodstream

Xylitol is a sugar alcohol that occurs naturally in the body during glucose metabolism and appears in small amounts in some foods. However, food manufacturers add it in vastly higher concentrations to artificially sweeten products. The research team showed that high blood levels of xylitol were associated with increased cardiovascular risk independent of other known risk factors. Dr Marco Witkowski, the study’s lead author, noted in previous research that xylitol can enhance the ability of blood platelets to form clots, a potential mechanism linking the sweetener to heart attacks and strokes.

What this means for consumers

The findings raise concerns about the long-term cardiovascular safety of a sweetener increasingly used as a sugar alternative. Despite its growing use, xylitol’s long-term health impacts have never been widely studied until now. The study does not prove that xylitol directly causes heart attacks or strokes, but the consistent association across two separate populations over decades suggests a real risk. Australians consuming sugar-free products regularly may accumulate significant xylitol levels over time.

Mixed evidence and next steps

Some researchers argue that elevated blood xylitol may reflect underlying metabolic disease rather than dietary intake, and short-term clinical trials have found no significant effect on vascular function. Long-standing evidence supports xylitol’s dental health benefits. However, the European Society of Cardiology has called for further studies on the safety of xylitol and other artificial sweeteners as their use continues to increase globally. The study was presented on 26 August 2026 at ESC Congress 2026 in Munich.

Final Thoughts

The study linking high xylitol blood levels to a 57% higher cardiovascular risk over six years suggests consumers should limit intake of sugar-free products containing this sweetener. More research is needed, but the findings warrant caution for those with existing heart disease risk factors.

FAQs

Disclaimer:

The content shared by Meyka AI PTY LTD is solely for research and informational purposes.  Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.