MIND diet cognitive results differed by starting blood biomarker levels
A randomized diet trial linked differences in cognitive test score changes to some starting blood markers associated with Alzheimer's disease.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
This abstract-based analysis suggests that the cognitive response to the MIND diet varied with starting blood biomarker levels. Participants with higher levels of certain markers showed greater improvement in cognitive scores with MIND than with the control diet. The outcome was performance on cognitive tests; the abstract does not report whether dementia diagnoses changed.
The abstract does not give biomarker thresholds or the size of the cognitive score difference within each biomarker subgroup, limiting interpretation of what these differences might mean for an individual.
What researchers found
Annual change in global cognitive composite z-score
Over 3 years, MIND versus control differences varied with Aβ40 and p-tau181 levels. The Aβ42/40 ratio showed no statistically significant modification.
What was tested
Researchers asked whether blood markers measured before the diets began helped explain differences in cognitive change between the assigned diets. Scores combined a battery of cognitive tests, with higher scores reflecting better performance.
How to read the result
The result concerns variation in the diet comparison across biomarker levels. It does not show that raising or lowering a blood marker changes cognition, or establish a general cognitive benefit for everyone assigned to MIND.
The original publication
Dietary intervention and cognition across Alzheimer's disease biomarker levels: The MIND clinical trial.
Dhana K, Aggarwal NT, Arfanakis K et al.
J Alzheimers Dis · 2026
- PubMed ID
- 42033408
- Record checked
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