The Association between Alcohol Consumption and ?-Cell Function and Insulin Sensitivity in Korean Population

Min-Gyu Yoo, Hyo-Jin Kim, Han Byul Jang, Hye-Ja Lee and Sang Ick Park
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Min-Gyu Yoo: Center for Biomedical Sciences, Korea National Institute of Health, Cheongju 28159, Korea
Hyo-Jin Kim: Center for Biomedical Sciences, Korea National Institute of Health, Cheongju 28159, Korea
Han Byul Jang: Center for Biomedical Sciences, Korea National Institute of Health, Cheongju 28159, Korea
Hye-Ja Lee: Center for Biomedical Sciences, Korea National Institute of Health, Cheongju 28159, Korea
Sang Ick Park: Center for Biomedical Sciences, Korea National Institute of Health, Cheongju 28159, Korea

IJERPH, 2016, vol. 13, issue 11, 1-11

Abstract: This cross-sectional study was performed to examine the association between alcohol consumption and insulin secretion and sensitivity using the Korean Genome and Epidemiology Study. Alcohol consumption levels were categorized into four groups: (i) abstainers, (ii) low (<5 g/day), (iii) intermediate (<30 g/day), and (iv) high (?30 g/day) alcohol consumption. ?-cell function and insulin sensitivity were estimated using the insulinogenic index (IGI 60 ), and Matsuda insulin sensitivity index (ISI), respectively. IGI 60 and ISI were dichotomized into high and low groups using median cut-off values and four groups were defined (G-I: high IGI 60 /high ISI; G-II: high IGI 60 /low ISI; G-III: low IGI 60 /high ISI; and G-IV: low IGI 60 /low ISI). Men consumed 26.5 g alcohol per day on average, whereas women only consumed 5.7 g/day, so women were excluded from subsequent analyses due to their low drinking levels. Alcohol consumption was positively associated with high-density lipoprotein (HDL) cholesterol, aspartate aminotransferase (AST), and triglycerides (TG) in men, but was negatively associated with IGI 60 ( p < 0.05). TG levels were only increased in individuals with decreased insulin sensitivity (G-II) or decreased ?-cell function (G-III) with high alcohol consumption. In addition, alcohol consumption increased HDL cholesterol in the four groups ( p < 0.001). In subjects with decreased insulin sensitivity (G-II), intermediate and high alcohol consumption increased the risk of high cholesterol and TG. In individuals with decreased ?-cell function (G-III), alcohol consumption increased the risk of high TG and high AST levels. High alcohol consumption was significantly associated with reduced insulin secretion. In addition, alcohol consumption was related to some metabolic risk factors depending on insulin secretion or sensitivity.

Keywords: alcohol consumption; insulin sensitivity; ?-cell function; hypertriglyceridemia (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2016
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