Research

Mixed

Observational studies linking LCS beverage consumption to increased risks of type 2 diabetes, stroke, and dementia are likely confounded by reverse causation and adiposity, rather than indicating a direct causal harm from LCS beverages.

Don't panic about the headlines linking diet soda to diabetes or stroke. The science suggests that people who are already overweight or unhealthy are more likely to drink diet soda, not that the soda causes the disease. However, since water is still the best choice, use LCS beverages as a tool to cut sugar, not as a health tonic.

ModerateQualifiesMEDIUM confidence
The association was attenuated to 8% after adjustment for adiposity, which implies that most of the association between LCS beverages and type 2 diabetes mellitus might be attributable to concurrent high adiposity... people trying to control their weight consume LCS beverages as one strategy, with an overall approach to weight control that is typically unsuccessful.
Rachel K. Johnson et al. · Circulation · 2018

Why this rating

Based on the interpretation of observational studies and meta-analyses, which have limitations like reverse causation.

Source

Low-Calorie Sweetened Beverages and Cardiometabolic Health: A Science Advisory From the American Heart Association

Rachel K. Johnson et al. · Circulation · 2018

DOI 10.1161/cir.0000000000000569

clinical_guidelineCited 172×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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