Coffee is the most common source of caffeine for adults. On average, one 8-ounce cup of coffee has about 95 milligrams of ...

If you come across a decaf coffee that claims to be totally caffeine-free, beware. Like most tea, all coffee contains caffeine. Samuel Klein, green coffee buyer for Brooklyn-based Partners Coffee, ...

Coffee is one of the most popular drinks in the world and its high levels of caffeine are among the main reasons why. It's a natural stimulant that provides an energy buzz and we just can't get enough ...

It’s a kick-start for the day, a jolt many of us need to power through, and one of the last socially acceptable addictions. It’s only when we have to go without coffee that we realise how badly we ...

Drinking coffee can affect your cortisol levels, but by how much depends on how much you consume as well as the time of day.

In TODAY.com's Expert Tip of the Day, a sleep expert recommends against drinking coffee after this time to prevent bedtime ...

Lauren Ball works for The University of Queensland and receives funding from the National Health and Medical Research Council, Queensland Health and Mater Misericordia. She is a Director of Dietitians ...