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Coffee and Dementia Risk
A study published in *JAMA* found an association between drinking caffeinated coffee and tea and a lower risk of dementia. It included 131,821 participants, followed for up to 43 years, during which 11,033 cases of dementia were recorded. The highest coffee consumption was associated with an 18% lower relative risk than the lowest consumption. The strongest differences appeared among those who drank about two to three cups of coffee or one to two cups of tea a day, with no similar association found for decaffeinated coffee. The researchers stressed that the observational study does not prove these drinks prevent dementia, and that the fact that participants were mainly health-care professionals limits how broadly the findings can be generalized.
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