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

A 43-year study of 131,000 people found caffeinated coffee was linked to lower dementia risk, while decaf showed no benefit.

A decades-long cohort study shows drinking caffeinated coffee and tea in moderation is linked to lower dementia risk and improved cognitive function.

Moderate coffee or tea intake was linked with lower dementia risk and better cognitive performance. The greatest benefit was associated with 2-3 cups of caffeinated coffee or 1-2 cups of tea daily. Decaf coffee had no relationship with dementia risk or cognitive outcomes.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." It’s no secret that people have strong opinions about coffee—the brew they prefer, how they like to drink it. And there are plenty of perks associated with ...

Experts explain what you need to know about each popular brew.