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.

and it's just an extra bonus that the conduit for that caffeine is so delicious. Think you're safe, though, because you only drink one Starbucks beverage a day? Think again. Some Starbucks drinks ...

With 150 milligrams of caffeine, 20 grams of protein, and 110 calories, Slate is an ideal option for a morning meal or post ...

Medically reviewed by Maggie Moon, MS, RD Coffee is a natural caffeine source that has long been studied for its health ...

I drink these two tins ... grabbing journal articles from the shelves and digging through charts to find the key data points. "Caffeine is what's called a wake-promoting therapeutic," he says.