A study of older adults with Type 2 diabetes published in October in the journal BMJ Open Diabetes Research & Care suggests that drinking coffee and tea every day lowers the risk of death compared with those who rarely drink either. The greatest benefit went to those who drank the most.
The study included over 4,900 older adults in Japan. All had Type 2 diabetes. Those drinking four or more cups of green tea plus two or more cups of coffee every day had a 63% lower risk of death than those who drank none. For two or three cups of tea only, the risk was almost 30% lower. Two cups of coffee alone resulted in a more than 40% reduction in mortality risk.
The researchers theorize that the polyphenols in coffee and tea reduce cellular inflammation and are protective against cell damage.
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