Add Yahoo as a preferred source to see more of our stories on Google. What a new study says about caffeine. (Getty Creative) (pixelfit via Getty Images) You may wake up in the morning desperate for a ...

Drinking too much caffeine can cause a caffeine overdose, a form of poisoning that healthcare providers also call caffeine toxicity.

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 ...

Too much coffee can be a latte for the heart to handle, with a new study linking over 400 milligrams of caffeine a day — roughly a venti-size coffee at Starbucks — to an increased risk of ...

Heart health is woven into the fabric of daily life for many, particularly for those who turn to coffee for a boost of energy and alertness. As coffee culture proliferates, researchers are delving ...

Secret side effects of drinking coffee on an empty stomach, according to experts.

Share on Pinterest Researchers say consuming more than 400 milligrams of caffeine per day could raise the risk of cardiovascular disease. Verelly/Getty Images Researchers report that consuming more ...

We've all been there. With a busy morning ahead, you have an extra cup of coffee to help you power through, not realizing that it's one too many. Now instead of being able to focus, you're irritable ...

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 ...