Medical News Today (MNT)Popular Chewing Gum Sweetener Linked to Higher Heart Attack Risk, Study Finds

ℹ️ Observational Association Only Evidence

Artificial sweeteners and sugar alcohols are often promoted as alternatives to sugar, particularly among individuals concerned about weight, diabetes, and cardiometabolic health. Investigators examined whether circulating xylitol levels were associated with major adverse cardiovascular events (MACE) in two large prospective cohorts comprising 17,710 participants from North America and Europe. After adjustment for traditional cardiovascular risk factors, individuals with the highest plasma xylitol levels experienced higher rates of MACE than those with the lowest levels. The findings extend prior mechanistic work suggesting xylitol may influence platelet function but remain observational and cannot determine whether xylitol exposure directly causes cardiovascular events.

Clinical Considerations

• The analysis included 17,710 participants from the Canadian Longitudinal Study on Aging and EPIC-Norfolk cohorts.
• Participants with the highest circulating xylitol levels had greater risk of MACE compared with those with the lowest levels after adjustment for traditional cardiovascular risk factors.
• In the Canadian cohort, the highest xylitol group demonstrated a 57% higher risk of heart attack, stroke, or cardiovascular death during 6 years of follow-up.
• In the EPIC-Norfolk cohort, the highest xylitol levels were associated with an 18% higher risk of MACE over 30 years of follow-up.
• Investigators reported a dose-response relationship, with cardiovascular event rates increasing as circulating xylitol concentrations rose.
• Residual confounding remains possible, and the study cannot determine whether xylitol exposure itself, underlying metabolic factors, dietary patterns, or other exposures explain the observed associations.

Practice Applications

• Recognize that the findings demonstrate an association rather than proof of harm from xylitol consumption.
• Interpret circulating xylitol levels within the broader context of cardiometabolic health and cardiovascular risk factors.
• Discuss with patients that long-term cardiovascular safety data for non-nutritive sweeteners remain an evolving area of investigation.
• Avoid assuming that sugar substitutes are inherently cardioprotective simply because they reduce caloric or glycemic exposure.
• Monitor future prospective and randomized studies evaluating cardiovascular effects of xylitol and related sugar alcohols.