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KMID : 1040620220280030565
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Clinical and Molecular Hepatology
2022 Volume.28 No. 3 p.565 ~ p.574
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The effect of diabetes and prediabetes on the prevalence, complications and mortality in nonalcoholic fatty liver disease
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Ng Cheng Han
Chan Kai En
Chin Yip Han
Zeng Rebecca Wenling
Tsai Pei Chen
Lim Wen Hui
Tan Darren Jun Hao
Khoo Chin Meng
Goh Lay Hoon
Muthiah Mark
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Abstract
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Background/Aims: Nonalcoholic fatty liver disease (NAFLD) is closely associated with diabetes. The cumulative impact of both diseases synergistically increases risk of adverse events. However, present population analysis is predominantly conducted with reference to non-NAFLD individuals and has not yet examined the impact of prediabetes. Hence, we sought to conduct a retrospective analysis on the impact of diabetic status in NAFLD patients, referencing non-diabetic NAFLD individuals.
Methods: Data from the National Health and Nutrition Examination Survey 1999?2018 was used. Hepatic steatosis was defined with United States Fatty Liver Index (US-FLI) and FLI at a cut-off of 30 and 60 respectively, in absence of substantial alcohol use. A multivariate generalized linear model was used for risk ratios of binary outcomes while survival analysis was conducted with Cox regression and Fine Gray model for competing risk.
Results: Of 32,234 patients, 28.92% were identified to have NAFLD. 36.04%, 38.32% and 25.63% were non-diabetic, prediabetic and diabetic respectively. Diabetic NAFLD significantly increased risk of cardiovascular disease (CVD), stroke, chronic kidney disease, all-cause and CVD mortality compared to non-diabetic NAFLD. However, prediabetic NAFLD only significantly increased the risk of CVD and did not result in a higher risk of mortality.
Conclusions: Given the increased risk of adverse outcomes, this study highlights the importance of regular diabetes screening in NAFLD and adoption of prompt lifestyle modifications to reduce disease progression. Facing high cardiovascular burden, prediabetic and diabetic NAFLD individuals can benefit from early cardiovascular referrals to reduce risk of CVD events and mortality.
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KEYWORD
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Diabetes mellitus, Non-alcoholic fatty liver Disease, Prediabetic state
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