
Plant-Based Fats May Protect Against Dementia, Large Cohort Finds
A large observational study in The American Journal of Clinical Nutrition found that replacing animal fats with vegetable fats and, more broadly, consuming more unsaturated plant fats, is linked to a lower risk of dementia in older adults. Those in the highest vegetable-fat group had about a 31% lower dementia risk; substituting 5% of daily calories from animal fat with vegetable fat was tied to roughly a 15% risk reduction. Higher saturated fat intake correlated with greater dementia risk, while monounsaturated and polyunsaturated fats showed protective associations. The results persisted across demographics and genetic risk markers, but the study is observational and cannot prove causation; memory-based dietary data and other unmeasured factors may influence the findings.













