Some people can’t enjoy caffeine without experiencing negative side effects. Learn about caffeine sensitivity risk factors, plus buzzy alternatives to consider.

Plus, when you'll start to notice them after your last fix.

Add Yahoo as a preferred source to see more of our stories on Google. What a new study says about caffeine. (Getty Creative) (pixelfit via Getty Images) You may wake up in the morning desperate for a ...

When you’re fasting, it’s usually OK to drink coffee, as long as you skip ingredients like cream and sugar. Learn more about the benefits of coffee and fasting.

Enjoying decaf coffee could be good for your health—it could help protect against type 2 diabetes, liver disease, and heart disease.

If you're feeling anxious and having trouble sleeping, you may be taking in too much caffeine, or you may be a slow metabolizer.

A cup of coffee or tea in the morning or an afternoon caffeine pick-me-up is usually fine for most adults. But parents might want to take a closer look at caffeine and other ingredients in the drinks ...

Chai and coffee both contain caffeine and energy-boosting compounds. However, they can affect your energy levels in different ...

A cup of coffee or tea in the morning or an afternoon caffeine pick-me-up is usually fine for most adults. But parents might want to take a closer look at caffeine and other ingredients in the drinks ...