Add Yahoo as a preferred source to see more of our stories on Google. If you regularly drink coffee, tea, energy drinks or soda, you may experience side effects or withdrawal symptoms when slashing ...

Add Yahoo as a preferred source to see more of our stories on Google. However, caffeine, particularly when it’s overused, can cause unwanted side effects like “insomnia, digestive problems, increased ...

Attention all coffee lovers! Feel like you can't even get out of bed without a cup of coffee or other caffeinated beverage? The American Psychiatric Association's Diagnostic and Statistical Manual of ...

Not only does coffee not dehydrate you, but it could also improve your heart health and has been linked to ageing and longevity benefits for women. It’s even been linked with heart and gut benefits, ...

Editor's Note: While onsite at the 2013 Annual Meeting of the American Psychiatric Association, Medscape spoke with Ali Canton, MD, of the University of Oklahoma College of Medicine about the ...

For years, I told myself I just liked coffee, until I stopped drinking it for 10 days and realized how much control it actually had over my mood and energy.

According to the nutritionist, the best way to consume L-theanine is to blend green tea with apples and other ingredients such as spinach, bananas, or berries to create a nutritious and energising bev ...

It's still largely a mystery why caffeine withdrawal causes headaches, but researchers have a few ideas.

Should a slip in the daily routine prevent you from quaffing your "cup of ambition," you probably don't need a caffeine researcher to tell you what will happen next—you will start to feel sick. In a ...

If you like to start your day with a warm cup of coffee or green tea for an energy boost, you're not alone. The National Coffee Association estimates that 66% of US adults drink coffee daily. Rest ...