You may wake up in the morning desperate for a cup of coffee (or four) to kickstart your day. However, a new study says that overdoing it on caffeine may have implications for your heart. The new ...

Coffee and the caffeine in it can interact with some drugs. Learn more about which drugs you should not take with coffee and when to discuss it with a healthcare provider.

It's generally safe to drink four 8-ounce (oz) cups of coffee per day, or about 400 milligrams (mg) of caffeine. If you drink more than that, you may feel anxious, jittery, or nauseous. Consuming too ...

Suddenly stopping caffeine can cause the brain to go into withdrawal. This happens because caffeine temporarily block receptors, and then when the caffeine is stopped, the brain releases too much of ...

Coffee can interfere with how your body absorbs or reacts to many common medications, including antidepressants, anticoagulants, and thyroid drugs. Caffeine may increase the risk of side effects like ...

Most people do not think of caffeine as a health threat. But a case from Sweden has put the spotlight on the substance’s ...

Fact checked by Nick Blackmer Coffee delivers a faster, stronger energy boost, while green tea offers calmer, more sustained ...

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Green tea is often praised as a superdrink, loaded with antioxidants, metabolism-boosting catechins, and natural energy from caffeine. It’s marketed as a healthy go-to for weight loss, detox, and ...