Before you get all jittery about this remember, many other studies have concluded that coffee drinking can be good for you.
"I wouldn't worry about drinking coffee if you like it and there probably are some health benefits to drinking coffee, caffeinated or decaf," says Dr. John Swartzberg, head of the editorial board at the UC Berkeley Wellness Letter.
The August issue features a cover story about coffee and health.
"There's pretty good evidence now that regular coffee drinkers have a lower chance of developing type-2 diabetes."
Swarztberg says coffee does not affect the risk of heart attacks or stroke. It may reduce the risk of Parkinson's disease and colon cancer.
"There are a lot of things that really look positive about drinking coffee."
The Wellness Letter points out that it does not recommend that anyone start drinking coffee for its potential benefits.
For more information
Heavy coffee consumption linked to higher death risk