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

Coffee offers more caffeine and a faster boost in energy, but can cause jitters and crashes.Chai has less caffeine and provides L-theanine for a steadier rise in energy.Consider timing and ways to ...

Caffeine offers some real health benefits—but not if you go overboard. Here’s how coffee, energy drinks, and other caffeine products can affect your health. America's favorite drug is caffeine, ...

Adam Taylor does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Man heading for a haircut. Image by © Tim Sandle. Man heading for a haircut. Image by © Tim Sandle. Caffeine shampoo is marketed as a hair loss treatment designed ...

In the land of venti pumpkin spice lattes and caramel macchiatos, Americans frequently partake in caffeine fixes. In fact, most people in the U.S. consume caffeine daily, primarily in the form of ...