A 43-year study of U.S. adults found that drinking two to three cups of caffeinated coffee daily is associated with a 57 percent lower incidence of dementia. The strongest benefits were seen in this specific range, with no additional protection observed from drinking more. Decaffeinated coffee did not show the same protective link, suggesting caffeine itself may play a role.
The association holds even among people with high genetic risk, indicating lifestyle factors can influence brain health independent of inheritance. However, this remains a correlation rather than proof of causation, as it is unclear if coffee prevents dementia or simply correlates with other healthy habits. Readers should treat this as an intriguing signal, not a prescription.
more: https://www.sciencedaily.com/releases/2026/11/261105224550.htm
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