AI Insight
A large-scale longitudinal study found that consuming two to three cups of coffee per day was associated with a 35% reduction in dementia risk, with the most pronounced protective effect observed in individuals under the age of 75. Researchers propose that caffeine may support neurological health by maintaining neuronal activity, reducing neuroinflammation, and inhibiting the accumulation of amyloid plaques linked to Alzheimer's disease. Notably, the association followed a dose-response plateau, meaning higher coffee consumption did not confer additional protective benefits beyond moderate intake.
Why it matters
If the findings are validated through further clinical research, moderate daily coffee consumption could emerge as a simple, low-cost behavioral factor in dementia prevention strategies at a population level. Given the rising global burden of Alzheimer's disease and related dementias, identifying modifiable lifestyle factors carries significant public health relevance.
A huge long-term study found that drinking two to three cups of coffee a day was linked to a much lower risk of dementia, especially before age 75. Researchers say caffeine may help keep brain cells active while reducing inflammation and harmful plaque buildup associated with Alzheimer’s disease. But more coffee wasn’t better — the protective effect appeared to level off after moderate intake.
Source: This daily habit could lower dementia risk by 35%, scientists say