Do you know how much caffeine is in your favorite coffee? It depends whether it's regular or espresso, but also on the size and how it's served.

So how is one to know how much caffeine is in a cup of coffee, anyway? Java is only one of the best sources of caffeine. How ...

Matcha’s powerhouse compounds — like EGCG, l-theanine, and polyphenols — work synergistically to support nearly every major ...

It’s our favourite caffeine fix, but your morning pick-me-up could be impacting your body in unexpected ways, from hair and ...

As the old saying goes, sometimes too much of a good thing can be bad. But what about when it comes to coffee?

So, is drinking coffee a possible anxiety trigger—and can you still enjoy a caffeinated cup without the negative side effects? We asked experts. Caffeine is the main active ingredient associated ...

David Benavides, a board-certified sleep medicine physician, told Newsweek when you should cut off coffee consumption and why.