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Triglyceride glucose (TyG) index as a predictor of incident type 2 diabetes among nonobese adults: a 12-year longitudinal study of the Korean Genome and Epidemiology Study cohort

 Byoungjin Park  ;  Hye Sun Lee  ;  Yong-Jae Lee 
 TRANSLATIONAL RESEARCH, Vol.228 : 42-51, 2021-02 
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Adult ; Aged ; Blood Glucose / metabolism* ; Cohort Studies ; Diabetes Mellitus, Type 2 / epidemiology ; Diabetes Mellitus, Type 2 / genetics ; Diabetes Mellitus, Type 2 / metabolism* ; Female ; Genetic Predisposition to Disease* ; Humans ; Longitudinal Studies ; Male ; Middle Aged ; Republic of Korea / epidemiology ; Triglycerides / metabolism*
The rate of undiagnosed type 2 diabetes tends to increase in lean Koreans, while the triglyceride glucose (TyG) index has been proposed as a surrogate marker of peripheral insulin resistance. We investigated the longitudinal relationship between TyG and incident type 2 diabetes among apparently healthy Korean adults. We assessed 4285 lean adults without diabetes aged 40-69 years from the Korean Genome and Epidemiology Study. Participants were divided into 4 groups according to quartiles of TyG index, calculated as ln [fasting triglycerides (mg/dL) × fasting plasma glucose (mg/dL)/2]. We prospectively assessed the hazard ratios (HRs) with 95% confidence intervals (CIs) for incident type 2 diabetes, based on the American Diabetes Association criteria, using multivariate Cox proportional hazards regression models, over 12 years after the baseline survey. During the follow-up period, 631 (14.7%) participants had newly developed type 2 diabetes. The HRs of incident type 2 diabetes in each TyG index quartile were 1.00, 1.63 (95%CI, 1.18-2.24), 2.30 (95%CI, 1.68-3.14), and 3.67 (95%CI, 2.71-4.98), respectively, after adjusting for age, sex, body mass index, waist circumference, smoking status, alcohol intake, and physical activity. Higher TyG index precedes and significantly predicts type 2 diabetes among community-dwelling middle aged and elderly lean Koreans.
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1. College of Medicine (의과대학) > Dept. of Family Medicine (가정의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Park, Byoungjin(박병진) ORCID logo https://orcid.org/0000-0003-1733-5301
Lee, Yong Jae(이용제) ORCID logo https://orcid.org/0000-0002-6697-476X
Lee, Hye Sun(이혜선) ORCID logo https://orcid.org/0000-0001-6328-6948
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