Does long-term coffee intake reduce type 2 diabetes mellitus risk?

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2009-01-01
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Pimentel, Gustavo Duarte [UNIFESP]
Zemdegs, Juliane C. S. [UNIFESP]
Theodoro, Joyce A.
Mota, Joao F. [UNIFESP]
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This review reports the evidence for a relation between long-term coffee intake and risk of type 2 diabetes mellitus. Numerous epidemiological studies have evaluated this association and, at this moment, at least fourteen out of eighteen cohort studies revealed a substantially lower risk of type 2 diabetes mellitus with frequent coffee intake. Moderate coffee intake (>= 4 cups of coffee/d of 150 mL or >= 400 mg of caffeine/d) has generally been associated with a decrease in the risk of type 2 diabetes mellitus. Besides, results of most studies suggest a dose-response relation, with greater reductions in type 2 diabetes mellitus risk with higher levels of coffee consumption. Several mechanisms underlying this protective effect, as well as the coffee components responsible for this association are suggested. Despite positive findings, it is still premature to recommend an increase in coffee consumption as a public health strategy to prevent type 2 diabetes mellitus. More population-based surveys are necessary to clarify the long-term effects of decaffeinated and caffeinated coffee intake on the risk of type 2 diabetes mellitus.
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Diabetology & Metabolic Syndrome. London: Biomed Central Ltd, v. 1, 8 p., 2009.
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