Caffeine can linger in your system for 10 or more hours, which can impact sleep. Double-shot lattes and cold brews have ...

If you're feeling anxious and having trouble sleeping, you may be taking in too much caffeine, or you may be a slow ...

If you quit caffeine suddenly, your body may react with headaches, fatigue, and mood swings you never expected. Dietitian ...

After putting coffee alternatives to the test, we found some options that taste like coffee, some that don’t, and some that have caffeine without coffee. Two testers tried them all, comparing each to ...

If you’re keen for a morning energy boost, but wary of the potential side effects of too much coffee (anxiety, wakefulness, tummy trouble), it could be worth seeking out an alternative to that ...

A lot of people don't like drinking water on its own, but before you slurp another highly caffeinated or sugary drink, try these sips instead to keep hydrated.

Taking oral caffeine supplements may significantly reduce fatigue and improve quality of life and mood in people with MS, trial results show.

A genetic study reveals that it is not coffee itself, but how long caffeine remains in the blood, that influences the risk of diabetes.