The levels of caffeine in your blood could affect the amount of body fat you carry, a factor that in turn could determine ...

Suddenly stopping caffeine can cause the brain to go into withdrawal. This happens because caffeine temporarily block receptors, and then when the caffeine is stopped, the brain releases too much of ...

Most people do not think of caffeine as a health threat. But a case from Sweden has put the spotlight on the substance’s ...

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 ...

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 ...

You may wake up in the morning desperate for a cup of coffee (or four) to kickstart your day. However, a new study says that overdoing it on caffeine may have implications for your heart. The new ...

Coffee and the caffeine in it can interact with some drugs. Learn more about which drugs you should not take with coffee and when to discuss it with a healthcare provider.

Join Morgan on a two-day caffeine experiment that compares the effects of low-caffeine vs. high-caffeine coffee on daily ...

Want that long-lasting buzz from your morning coffee? Skip that second cup and try this surprising breakfast addition instead. Eating grapefruit with your java could potentially extend the effects of ...

Dr. Elizabeth Yuko is a bioethicist and adjunct professor of ethics at Fordham University. She has written for The New York Times, The Washington Post, The Atlantic, Rolling Stone, CNN & Playboy.