ArticleThe journal of prevention of Alzheimer's disease2026
Characterization of a metabolomics signature of the brain-health-promoting MIND diet in older persons.
Article in The journal of prevention of Alzheimer's disease, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe MIND diet supports healthy cognitive aging. Yet, a challenge remains to identify individuals who do not adhere to the MIND and could be at risk for accelerated cognitive decline. A multi-metabolite biomarker panel could facilitate population screening.
objectivesTo determine and validate a blood metabolomics signature of MIND adherence in a large cohort of older adults, and to estimate its association with subsequent cognitive decline. DESIGN, SETTING AND
participantsParticipants were older adults (≥65 years) from the population-based three-City (3C) cohort, free of dementia at study baseline and followed for up to 12 years for cognition, who were included in two case-control samples on cognitive decline nested within two centers (Bordeaux and Dijon cities, n = 838). EXPOSURES: 155 diet-related serum metabolites measured with a multianalyte metabolomics platform. MAIN OUTCOMES AND MEASUREMENTS: The primary outcome was adherence to the MIND diet, assessed in a subsample of 344 participants from Bordeaux center (which underwent the dietary surveys, 24 h recall and food-frequency questionnaire). A metabolomics signature of MIND diet adherence was characterized with penalized regression and a metabolomics score ("metaboscore") reflecting the overall MIND biological fingerprint was calculated. The secondary outcome was cognitive decline status (coded as binary: accelerated, vs. null or minimal decline) over follow-up, assessed using repeated cognitive measures in the two case-control samples. The metaboscore was reconstructed and linked to the odds of cognitive decline.
resultsEight metabolites were identified: three were associated with higher MIND adherence (3-hydroxyhippuric acid, 5-hydroxyindole-3-acetic acid, betaine - phenolic acids and amino acid related to plant foods) and five with lower MIND adherence (1-methylhistidine from red meat; cyclo(L-leucyl-L-prolyl) from coffee; tartaric acid from wine; myristoyl-carnitine and dehydroepiandrosterone sulfate, endogenous). The French-MIND metaboscore was linked to lower odds of cognitive decline, although replication was not statistically significant after multivariable adjustment.
conclusionA novel metabolomic signature of the MIND diet was characterized, which may help screen older adults at risk of poor brain nutrition and could support personalized dietary prevention strategies.
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