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Ritchie et al (2007) reports from a French cohort study that caffeine may be neuroprotective in women, but not in men. Over 7000 men and women (65 years or older) were followed over a period of 4 years, and women drinking 3 or more cups of coffee per day showed less cognitive decline than their uncaffeinated peers. Men showed no effect in Ritchie ( Read more... )

P. J. Rogers' 2007 review calls caffeine the most popular drug in the world. In Canada, at least, it's been very much in the news recently. The Hamilton Spectator (2007) reports that Ahmed El-Sohemy has found a gene that seems to be linked to elevated mood effects from caffeine, at least in men. Different gene phenotypes made a 60% to 20% ( Read more... )