Good news for coffee drinkers, that morning cup of joe may not harm your health.
Researchers studied 42,000 healthy German adults over nine years.
They looked at those who drank more than four cups of coffee a day and those who didn't drink it. Everyone developed heart disease, diabetes and cancer at the same rate.
However, coffee drinkers were 23 percent less likely to develop type 2 diabetes.
This does not mean coffee prevents type 2 diabetes. Researchers suggest there's something in that cup of joe other than caffeine.