caffeine caffeine

Next month in the U.K., anyone at a major grocery store looking to buy a soft drink with more than 150 mg of caffeine per liter will need to present an ID. Stephane Grangier/Getty Images hide caption

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Stephane Grangier/Getty Images

Employees from dining services stock bottles of Coca-Cola and other caffeinated sodas in the Cougareat at the Wilkinson Student Center on BYU's Campus. This marks the first time caffeinated sodas have been available at campus eateries since the mid 1950's. Jaren Wilkey/BYU hide caption

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Jaren Wilkey/BYU

People who drank three to five cups of coffee per day had a lower risk of premature death than those who didn't drink, a new study finds. iStockphoto hide caption

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iStockphoto

Drink To Your Health: Study Links Daily Coffee Habit To Longevity

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Gulping down coffee to stay awake at night delays the body's natural surge of the sleep hormone melatonin. Hayato D./Flickr hide caption

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Hayato D./Flickr

Caffeine At Night Resets Your Inner Clock

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Make mine a venti: An example of a drinking vessel from the Grasshopper Pueblo archaeological site in central Arizona. Researchers tested shards of similar vessels found at various sites in the American Southwest and found evidence that people in the region were drinking caffeinated cacao and yaupon holly drinks 1,000 years back. Courtesy Patricia Crown hide caption

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Courtesy Patricia Crown

One teaspoon of pure caffeine powder delivers about the same jolt as 25 cups of coffee. The Center for Science in the Public Interest hide caption

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The Center for Science in the Public Interest

Potent Powdered Caffeine Raises Safety Worries

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A barista makes coffee using the pour-over method at Artifact Coffee in Baltimore. Benjamin Morris/NPR hide caption

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Benjamin Morris/NPR

Coffee Myth-Busting: Cup Of Joe May Help Hydration And Memory

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