Experts explain the problems with the study claiming 'artificial sweeteners are bad for the brain'

Experts say a 2025 study linking artificial sweeteners to worse brain function should be interpreted cautiously.

Critics point to weak self-reported intake data, no tracking of diet changes over eight years, and the fact that the study shows correlation, not causation.

They also note it failed to distinguish between sweeteners and may contain statistical inconsistencies and mathematical errors.

Because artificial sweetener safety is a high-profile issue, observers warn against overreading the limits of observational research.