Human study · Nutrition · 14 Sept 2026
Hidden brain wiring may help keep the mind sharp as gray matter shrinks
Source: ScienceDaily
What the research found
Study (cross-sectional imaging). Yingxu Liu, Leon Aksman and colleagues at USC’s Stevens INI report in Alzheimer’s & Dementia on 459 community-dwelling adults aged 60+ in India’s LASI-DAD cohort. Healthier superficial white-matter (short fibers under cortex) tracked better language scores and appeared to weaken the link between gray-matter loss and poorer cognition. Gray-matter atrophy remained the stronger overall predictor. One time-point cannot say which change comes first. Educational brain-aging notes, not a dementia diagnosis.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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