Caffeine

Hot tea may do more than warm your insides: Drinking at least one cup of caffeinated tea a day may lower a person's risk for glaucoma, a new study suggests.

A company that claims to make one of the strongest coffees in the world is recalling some of its products because they could pose a risk of serious illness.

What happens when you combine caffeine and marijuana?

People who drink coffee live longer, new studies find.

A teen in South Carolina has died after drinking three caffeinated beverages in a short period of time.

Consuming energy drinks may be particularly risky for people with a certain genetic heart condition, a new study from Australia suggests.

Drinking coffee may reduce the inflammatory processes that naturally come with age, researchers said.

If one cup of coffee keeps you perked up all day, you may be able to thank your genes for that long-lasting caffeine kick, a new study finds.

A previously healthy 28-year-old man wound up in the emergency room with heart problems after drinking two energy drinks a day for months.