More companies are pushing low-calorie, sugar-free beverages they say are healthy. Some servings have nearly the same level of caffeine as a six-pack of Coca-Cola. By Julie Creswell It has been more ...

Aug 30 (Reuters) - Pediatricians and parents are calling for the U.S. to treat new high-caffeine energy drinks like alcohol and cigarettes and ban their sale to minors as a single serving can contain ...

And you thought Red Bull was bad. It turns out that while a can of the vilified energy drink has 80 milligrams of caffeine (just one-fifth the maximum amount you should have each day, according to the ...

A preventative cardiologist takes a look at the connection between caffeine and heart health, with an focus on coffee and tea. The more I learn about caffeine, the more *stimulated* I get—especially ...

Caffeine increases brain activity, focus, and cognition while countering exhaustion. Common signs of a caffeine crash include headaches, tiredness, difficulty concentrating, and irritability. This can ...

If caffeine does not affect you it may be due to your genetics, lack of sleep, or increased tolerance. To boost your energy without caffeine, try exercising, going outside, or eating a healthy snack.