Coffee, Tea Linked to Lower Dementia Risk
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By
February 9, 2026
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3 min
A prospective cohort study involving 131,821 participants from the Nurses' Health Study and Health Professionals Follow-up Study found that drinking 2 to 3 cups of caffeinated coffee or 1 to 2 cups of tea daily is linked to a lower risk of developing dementia and enhanced cognitive function. Over 43 years, 11,033 dementia cases were recorded. The highest quartile of coffee drinkers showed an 18% reduced likelihood of dementia compared to the lowest quartile. These associations persisted across various demographics, although the effects were less pronounced in older individuals.
1. Caffeinated coffee and tea consumption linked to lower dementia risk. 2. 2-3 cups of coffee/day associated with 18% lower dementia likelihood. 3. Study followed 131,821 participants over 43 years. 4. Objective cognitive function assessed via neuropsychological tests. 5. Potential reverse causation exists; limitations in self-reported data noted.
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