For billions of people around the planet, coffee is fuel for the daily grind. Endurance athletes swear by java to get them going (in more ways than one). For many, life without at least one daily cup is simply a no-go. But as with any good thing, too much coffee is a bad thing.
Because of it’s caffeine content, too much coffee can cause high blood pressure, a precursor to heart disease, and can cause side effects like dizziness, shakiness, headache, or abnormal heartbeat. Thanks to research from the University of South Australia, we now have an upper limit for how much coffee is safe when talking about your heart disease risk.