Specifically, four cups of coffee or tea a day can lead to the 25 to 35 percent decrease in chances of getting diabetes -- or a 7 percent lowering of risk for every cup.
The study reviewed past research between 1966 and 2009, encompassing more than 450,000 patients, and also involved original research. It found that coffee and tea protect against metabolic syndrome.
Many previous studies have also found that coffee and tea are linked to lower chances of getting diabetes, including studies in 2002 and 2004.
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