Learn how caffeine affects brain chemicals and health, sleep, and mood. Understand safe daily limits, hidden sources, and signs you’re getting too much.

Add Yahoo as a preferred source to see more of our stories on Google. Pouring coffee We already know that the stimulating powers of caffeine make it an unsuitable choice for a late-night drink – at ...

The effects of high and low consumption of caffeine on the brain’s dopamine transporter binding in patients diagnosed with Parkinson’s disease. Regular high caffeine consumption affects dopamine ...

A growing body of laboratory research suggests that caffeine, the most consumed psychostimulant in the world, may reduce symptoms of anxiety and depression by suppressing inflammatory signaling inside ...

Plus, how to find your caffeine sweet spot.

Regular high caffeine consumption affects dopamine function in patients with Parkinson’s disease, shows a new international study led by the University of Turku and Turku University Hospital in ...

A recent review of animal research suggests that caffeine might help ease symptoms of anxiety and depression by reducing inflammation in the brain. The researchers analyzed multiple experiments and ...

Coffee's ability to boost alertness is commonly attributed to caffeine, but new research suggests there may be other underlying mechanisms that explain this effect. "There is a widespread anticipation ...

Decades-long study suggests that coffee may do more than increase mental sharpness over the course of a workday ...

Research indicates that regular high caffeine consumption affects dopamine function in patients with Parkinson’s disease. This comes from work undertaken at the University of Turku and Turku ...