The impact of caffeine on blood pressure from coffee (and cola, energy drinks and chocolate) varies. Research reviews report ...

For most people, consuming some caffeine is harmless — but too much can be dangerous. Recent news coverage has raised questions about the amount of caffeine in some popular drinks and what consumers ...

We already know that the stimulating powers of caffeine make it an unsuitable choice for a late-night drink – at least if you want to get any shut-eye. But a new study adds a whole extra level of ...

Could coffee help to counteract some of the effects of alcohol on the brain, and potentially limit the risk of addiction? That's what's suggested by a new study of how caffeine interacts with the ...

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 ...

Cutting off caffeine earlier in the day may change more than just your sleep quality.

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

Were you tossing and turning last night and cursing yourself for the iced caramel macchiato you drank in the late afternoon? Do you worry about the amount of caffeine in a Mountain Dew? Caffeine is ...

Dear Mayo Clinic: I love to drink coffee. I often have multiple cups a day. Recently, I was diagnosed with diabetes and high blood pressure. My doctor advised that I may want to cut back on my ...

A cup of coffee or tea in the morning or an afternoon caffeine pick-me-up is usually fine for most adults. But parents might want to take a closer look at caffeine and other ingredients in the drinks ...