Caffeine is the world's most widely consumed psychoactive drug, lauded for its energy-boosting and focus-enhancing effects. However, the line between beneficial buzz and unpleasant jitters can be thin ...

Drinking more coffee and tea isn’t our problem. Both drinks have long been known for their health benefits. But when you isolate caffeine and shovel it into energy drinks, sugar-loaded lemonades, and ...

If you opt for blonde espresso at Starbucks, each shot contains 85 mg of caffeine. Is 200 mg of caffeine a lot? Caffeine is a stimulant that affects every person differently. A variety of things ...

Caffeine is also a diuretic, which means that it can dehydrate your body. People who drink nothing but highly caffeinated drinks can end up in the hospital after passing out due to severe dehydration.

If you suddenly stop or reduce your caffeine intake after consuming it regularly — typically more than 200 mg per day for more than 2 weeks — you may feel the symptoms of caffeine withdrawal.

Researchers found that higher urinary levels of caffeine and specific metabolites, especially in men, were significantly ...

Caffeine shifts brain activity during sleep by increasing EEG complexity and reducing long-range temporal correlations, ...

Caffeine is a natural stimulant found in over 60 plants. People consume caffeinated foods and beverages to give them a kick of energy. The most common way to take in caffeine is with a cup of ...