Heads up, coffee fiends. Drink all the brew you want – up to the sixth cup. That's the one that goes sip too far, says new research from the University of South Australia.
Previous research has shown that drinking coffee is good for you – one 2017 study found that drinking four or more cups daily could reduce your risk of death – and while that has not been disproved, you may want to stop at five cups . The latest research has shown that drinking six or more cups a day increases the risk of developing heart disease by 22%.
Caffeine is the culprit
It's the caffeine that's the culprit ̵
"Most people would agree that if you drink a lot of coffee, you may feel jittery, irritable or perhaps even nauseous – that's because caffeine helps your body work faster and harder, but it's also likely to suggest that you may have "University of South Australia researcher Professor Elina Hyppönen of the Australian Center for Precision Health, in a release, has reached your limit for that time.
"We also know that the risk of cardiovascular disease increases with high blood pressure, a known consequence of over-consumption of caffeine," says Professor Hyppönen.
"In order to maintain a healthy heart and healthy blood pressure, people should limit their coffees to less than six cups a day – based on our data six was the tipping point where caffeine began to negatively affect cardiovascular risk."
No big deal – try switching to decaf later in the day. Or choose a lovely decaffeinated tea.
The study is published in the American Journal of Clinical Nutrition .