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, ...

Discover how big of a difference caffeine makes.

While you might be trying to be healthy by removing caffeine from your diet, decaf coffee could be introducing other unhealthy toxins into your body. Most people opt for decaf coffee as an effort to ...