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THURSDAY, NOVEMBER 26, 2009
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Coffee's Smell Alone Can Perk You Up

Beverage's mere aroma increases wakefulness, study shows

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(Newser) – The aroma of coffee is enough to wake you up, a new study shows. Smelling coffee stimulated the expression of genes known to reverse the damaging effect of stress and sleep deprivation in test animals’ brains, international researchers tell LiveScience. Coffee’s stimulating effects have been known for ages, but are usually attributed to its caffeine kick.

Republican presidential candidate Sen. John McCain, R-Ariz., carries a cup of coffee as he gets out of his SUV at his campaign headquarters in the Crystal City section of Arlington, Va., Sunday, June 15, 2008.
Republican presidential candidate Sen. John McCain, R-Ariz., carries a cup of coffee as he gets out of his SUV at his campaign headquarters in the Crystal City section of Arlington, Va., Sunday, June...   (AP Photo/LM Otero)
Coffee's stimulating effects have long been attributed to its caffeine content.
Coffee's stimulating effects have long been attributed to its caffeine content.   (Shutterstock)
An international group of scientists reports that inhaling the aroma of a hot cup of joe may alter the activity of some genes in the brain, reducing the effects of sleep deprivation.
An international group of scientists reports that inhaling the aroma of a hot cup of joe may alter the activity of some genes in the brain, reducing the effects of sleep deprivation.   (Shutterstock)
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