Caffeine doesn’t just make it harder to fall asleep; it changes how the brain behaves during rest. New research shows that caffeine alters brain activity in ways that make sleep look more like ...

While relatively rare, caffeine overdoses can be swift and brutal. Last March, a 28-year-old “workout queen” died from a caffeine overdose, which her heartbroken mother blamed on energy drinks.

Dakota Johnson was jittery and having trouble sleeping after drinking too many caffeine-infused energy drinks while directing her first movie. Here’s why you should not do the same.

Katie Donnell, 28, was a "workout queen" who died of a shocking heart attack — her mother believes it was a caffeine overdose and that energy drinks are to blame.

New research suggests that certain doses of caffeine consumption can disrupt one's sleep — even when caffeine is consumed 12 hours before going to bed. Skip to content PEOPLE ...

Another question that comes up commonly is about the role of caffeine. Caffeine is a constituent of many over-the-counter pain relievers and also some prescription drugs, mostly those that are ...

A morning cup of coffee may do more than just perk you up, according to new research. Moderate amounts of caffeine intake — defined as about three cups of coffee or tea a day — were associated ...