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KMID : 0384320160370010007
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Korean Journal of Family Medicine
2016 Volume.37 No. 1 p.7 ~ p.13
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Effect of Coffee Consumption on the Progression of Type 2 Diabetes Mellitus among Prediabetic Individuals
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Lee Ji-Ho
Oh Mi-Kyeong
Lim Jun-Tae
Kim Haa-Gyoung
Lee Won-Joon
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Abstract
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Background: A previous large-scale cohort study investigated the relationship between coffee intake and the progression of diabetes mellitus in the United States. However, studies on the effects of coffee on diabetes are rare in South Korea. Therefore, this study assessed the amount and method of coffee intake in Koreans in order to determine if coffee intake has a prophylactic effect on diabetes progression.
Methods: This study included 3,497 prediabetic patients from a single medical institution, with glycated hemoglobin levels ranging from 5.7% to 6.4%. Cross-tabulation and Kaplan-Meier survival analyses were performed to compare patients with and without diabetes progression based on the frequency and method of coffee intake. Cox proportional hazard analysis was performed to correct for confounding variables.
Results: The observation period (mean±standard deviation) was 3.7±2.3 years. Kaplan-Meier survival analysis revealed that the risk of diabetes progression was lowest in patients who drank black coffee three or more times per day (P=0.036). However, correction for confounding variables in Cox proportional hazard analysis revealed that, while the risk was lower for the patients who typically consumed black coffee than for those who mixed creamer and sugar into their coffees, the difference was not significant.
Conclusion: The results of this study suggest that drinking coffee without sugar and creamer at least three times daily has the greatest preventive effect on diabetes onset.
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KEYWORD
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Prediabetic State, Glycated Hemoglobin, Coffee, Diabetes Mellitus
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