Coffee is one of the most popular drinks in Germany — people drink more than 250 million cups daily. But is it healthy?

New research shows coffee does not dehydrate the body or harm the heart in most people. In fact, it can support heart health, boost mood and help you stay alert.

Experts say not only caffeine but also plant compounds in coffee contribute to its positive effects. Cardiologists give the all-clear even for many heart patients, as long as they drink it in moderation.

We explain how much caffeine is safe, how it affects the body, and when to be cautious — for example, when taking certain medications. These scientifically backed facts are for everyone who loves coffee or wants to know whether their daily cup is good for them.