Green tea contains L-theanine, an amino acid that has a calming effect and can increase concentration at the same time. In ...

Caffeine in coffee offers surprising health benefits, although energy drinks may be harmful. Here's what you need to know.

A 2017 meta-analysis of 17 studies found that green tea polyphenols may limit bone loss, especially in women who don't drink ...

Coffee can cause symptoms like anxiety and jitteriness. Fortunately, you can enjoy other caffeinated and non-caffeinated ...

A study in the Journal of the American Heart Association found drinking two or more cups of coffee daily may double the risk ...