For many people, the aroma of freshly brewed coffee is the start of a great day. But caffeine can cause headaches and jitters in others. That’s why many people reach for a decaffeinated cup instead. I ...

This article was originally featured on The Conversation. For many people, the aroma of freshly brewed coffee is the start of a great day. But caffeine can cause headaches and jitters in others.

Caffeine is generally safe to drink up to 400 milligrams a day, according to the Food and Drug Administration (FDA). That's equivalent to about four or five cups of coffee. For the average person, ...

Stumbling upon a new source of underwater caffeine was just an added bonus of a new study examining the impact of chemical compounds that corals release into the seawater. Stumbling upon a new source ...

Feeling virtuous because you've switched to decaf for your morning brew? Then you might be dismayed to learn that a common process used to strip caffeine from coffee beans involves a chemical that has ...

Medically reviewed by Kristie Reed, PharmD Key Takeaways Green tea extract and caffeine together can boost focus and mental ...