Caffeine can linger in your system for 10 or more hours, which can impact sleep. Double-shot lattes and cold brews have ...

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

Caffeine could act as an on-off switch for gene and cell therapies, giving doctors more precise control over powerful ...

We all have our favorite caffeine vehicles—yours might be a thick, foamy espresso or a strong cup of Earl Gray tea, or chocolate. I like a good cup of black coffee made with a French press! One way or ...

From espresso to energy drinks to supplements, caffeine comes in many forms, Rula notes. And if you're like most people, you probably enjoy a cup of coffee each morning or a late-afternoon soda to ...

Teens have a lot of options when it comes to eating and drinking caffeinated products, and many do just that. In fact, research shows that nearly a quarter of teens have caffeine all or most days of ...