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Heavy Coffee Drinkers May not be Getting any Boost from their Caffeine Fix

URL: http://www.jewishjournal.com/nicejewishdoctor/item/heavy_coffee_drinkers_may_not_be_getting_any_boost_from_their_caffeine_fix

Everyone knows that caffeine is useful on occasion if we need to stay alert, especially when we’re sleepy. Is there any college graduate who hasn’t had a caffeine-fueled all-night study session before an exam? I certainly remember several nights in which I drank coffee to the point of inability to blink, much less sleep. But for those who drink a lot of coffee daily, how much of a boost in alertness are they getting? A study in this issue of Neuropsychopharmacology offers an interesting insight.

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