Study links diets to cognitive performance
A 2026 study published in the Journal of Nutrition found that certain diets are associated with better cognitive performance, though the benefits are not as strong as earlier research suggested.DGAC finds no clear diet recommendation
The U.S. Dietary Guidelines Advisory Committee (DGAC) concluded in 2025 that there was not enough evidence to recommend a specific diet for preventing cognitive decline.Euro-American team re-analyzes data
An Euro-American research team re-examined the link between diet and cognition by compiling data from 17,368 adults across eight studies. They found that certain dietary patterns are linked to better memory and executive function.Key diets associated with cognitive benefits
The Mediterranean diet, the DASH diet, and the MIND diet—designed specifically for brain health—were most strongly linked to better cognitive performance. High intake of red and processed meat was associated with poorer cognitive outcomes.Study highlights global dementia challenge
The findings are especially relevant given that 57 million people worldwide live with dementia, making diet-related cognitive benefits a significant public health concern.Research methodology and collaboration
The study was directed by Natalia Soldevila-Domenech and supported by the Institute for the Advancement of Food and Nutrition Sciences (IAFNS). It used harmonized food questionnaires and standardized cognitive tests from eight studies in Europe and the United States.
