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

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

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 ...

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 ...