Caffeine is a known psychostimulant, but this study appears to suggest its effects may be more profound.
However, lead researcher Dr Karen Ritchie of the French National Institute for Health and Medical Research warned against jumping to premature conclusions.
She said: “”While we have some ideas as to how this works biologically, we need to have a better understanding of how caffeine affects the brain before we can start promoting caffeine intake as a way to reduce cognitive decline.
“”But the results are interesting – caffeine use is already widespread and it has fewer side effects than other treatments for cognitive decline, and it requires a relatively small amount for a beneficial effect.””
The study, which involved 7,000 women, did not find that caffeine consumers had lower rates of dementia.
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