Overview
- Higher adherence to the MIND diet correlated with slower loss of gray matter on serial MRIs in 1,647 Framingham Offspring participants over about 12 years, an effect equivalent to roughly 2–2.5 years of delayed brain aging.
- In the JAMA Neurology pooled analysis, the DASH pattern showed the largest association with lower self-reported cognitive decline, with the strongest links for adherence in midlife, particularly ages 45–54.
- Other healthy dietary patterns also tracked with benefits, with adherent participants 11% to 35% less likely to report cognitive decline compared with less adherent peers.
- The diets emphasize vegetables, leafy greens, berries, nuts, whole grains, fish and poultry while limiting sodium, sugar, red meat, fried foods and processed items, with berries and poultry highlighted as especially beneficial in the MRI study.
- Both reports are observational and limited by recall bias in food surveys, potential reverse causality, demographic homogeneity and unmeasured confounders, prompting calls for randomized trials to test causation and timing of benefit.