Journal
AMERICAN JOURNAL OF EPIDEMIOLOGY
Volume 164, Issue 11, Pages 1075-1084Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/aje/kwj323
Keywords
beverages; coffee; cohort studies; diabetes mellitus; type 2
Categories
Funding
- NHLBI NIH HHS [T32HL07024, N01-HC-55022, N01-HC-55015, N01-HC-55016, N01-HC-55018, N01-HC-55019, N01-HC-55020, N01-HC-55021] Funding Source: Medline
- NIDDK NIH HHS [1 K01 DK067207-01A1] Funding Source: Medline
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The authors analyzed data from a prospective, community-based cohort to assess the risk of incident type 2 diabetes mellitus associated with coffee and sweetened beverage consumption. They included 12,204 nondiabetic, middle-aged men and women in the Atherosclerosis Risk in Communities (ARIC) Study (1987-1999). Consumption of each beverage was assessed by food frequency questionnaire and classified into categories of cups per day. They found an inverse association, after adjusting for potential confounders, between increased coffee consumption and risk of type 2 diabetes mellitus in men (for >= 4 cups (>= 0.95 liter)/day compared with almost never: hazard ratio = 0.77, p(trend) = 0.02) with no significant association in women (hazard ratio = 0.89, p(trend) = 0.32) using a combination of self-report of physician-diagnosed diabetes, diabetes treatment, and a fasting or nonfasting blood glucose test. When self-reported diabetes or diabetes treatment alone was used, a stronger and significant inverse association was seen in men and women. Sweetened beverage consumption (men: hazard ratio = 1.03, p(trend) = 0.94; women: hazard ratio = 1.01, p(trend) = 0.58) showed no consistent association with the incidence of type 2 diabetes mellitus. In summary, increased coffee consumption was significantly associated with a decreased risk of diagnosed type 2 diabetes mellitus in community-based US adults.
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