Overview
- A Neurology analysis of 92,849 adults found those who ate the most plant foods had a 12% lower risk of dementia than those who ate the least.
- The study tied lower risk to higher-quality plant foods such as whole grains, vegetables, fruits, nuts, legumes, vegetable oils, tea and coffee, rather than refined grains, added sugars, fruit juice or fast‑food staples like fries.
- In a subgroup that repeated diet surveys a decade later, people who cut unhealthy plant foods were 11% less likely to develop dementia, while those who ate more of them were about 25% more likely.
- The new findings build on past research linking the MIND pattern—which favors leafy greens, berries, whole grains, beans, nuts, fish, poultry and olive oil while limiting red and processed meat, sweets, butter, full‑fat cheese and fried foods—to slower decline and lower dementia risk.
- Researchers emphasized these results show associations rather than cause, and public‑health guidance points to starting in midlife because brain changes tied to Alzheimer’s can begin decades before symptoms.