Caffeine is everywhere, from our morning coffee to a quick soda pick-me-up. But while most people know about these popular ...

Coffee consumption influences your blood pressure and the way your blood vessels relax. People with high blood pressure may ...

Medically reviewed by Femi Aremu, PharmD Caffeine's diuretic nature may lower magnesium levels in your body.Low magnesium levels can cause muscle cramps, anxiety, and weakness.Eating more ...

New research suggests that drinking coffee at night may do more than disrupt sleep—it could actually change how your brain ...

For most people, consuming some caffeine is harmless — but too much can be dangerous. Recent news coverage has raised questions about the amount of caffeine in some popular drinks and what consumers ...

Nighttime caffeine increased impulsive behavior in fruit flies, with stronger effects in females and potential implications ...

Add Yahoo as a preferred source to see more of our stories on Google. What a new study says about caffeine. (Getty Creative) (pixelfit via Getty Images) You may wake up in the morning desperate for a ...

Could coffee help to counteract some of the effects of alcohol on the brain, and potentially limit the risk of addiction? That's what's suggested by a new study of how caffeine interacts with the ...

Kim Kardashian has released a new "healthy" energy drink called Update, which contains paraxanthine instead of caffeine. We asked experts about paraxanthine vs. caffeine in Update and how it stacks up ...

Paraxanthine, a compound the body naturally produces when it breaks down caffeine, is starting to appear in energy drinks and ...

Were you tossing and turning last night and cursing yourself for the iced caramel macchiato you drank in the late afternoon? Do you worry about the amount of caffeine in a Mountain Dew? Caffeine is ...

These results suggest that ADHD may not be an issue of too much stimulation, but rather an issue of not enough activation in ...