In the study about to be published in Nature's journal Neuropsychopharmacology, Rogers et al. share with us that our regular caffeine habits are actually causing a dependency that leaves us in withdrawl. After 16 hours without caffeine, regular caffeine consumers and non-consumers were divided up. Some were given caffeine tablets and others a placebo. The results show that the "post-caffeine levels of alertness [in regular caffeine consumers] were actually no higher than the non/low consumers who received a placebo, suggesting caffeine only brings coffee drinkers back up to 'normal'."*
So what does that tell us regular visitors to the coffee pot? If we want to increase our alertness, we might think about skipping the "regular," grabbing the decaf, and doing something that is proven to increase blood flow to the brain -- like taking a walk.
Image courtesy of Michelle Meiklejohn from freedigitalphotos.com