Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study

Abstract Background To investigate the combined effect of prediabetes and fatty liver index on incident diabetes (DM), major adverse cardiovascular events (MACE), and mortality in middle-aged adults. Methods A nationwide cohort study was conducted involving 1,182,751 middle-aged adults aged 40 to 65...

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Main Authors: Young Sang Lyu, Minae Park, Hee Kyung Kim, Sojeong Park, Ji Yong Park, A Ram Hong, Jee Hee Yoon, Seogsong Jeong, Youngmin Yoon, Jin Hwa Kim, Sang Yong Kim, Ho-Cheol Kang, Wonsuk Choi
Format: Article
Language:English
Published: BMC 2025-07-01
Series:Cardiovascular Diabetology
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Online Access:https://doi.org/10.1186/s12933-025-02793-7
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author Young Sang Lyu
Minae Park
Hee Kyung Kim
Sojeong Park
Ji Yong Park
A Ram Hong
Jee Hee Yoon
Seogsong Jeong
Youngmin Yoon
Jin Hwa Kim
Sang Yong Kim
Ho-Cheol Kang
Wonsuk Choi
author_facet Young Sang Lyu
Minae Park
Hee Kyung Kim
Sojeong Park
Ji Yong Park
A Ram Hong
Jee Hee Yoon
Seogsong Jeong
Youngmin Yoon
Jin Hwa Kim
Sang Yong Kim
Ho-Cheol Kang
Wonsuk Choi
author_sort Young Sang Lyu
collection DOAJ
description Abstract Background To investigate the combined effect of prediabetes and fatty liver index on incident diabetes (DM), major adverse cardiovascular events (MACE), and mortality in middle-aged adults. Methods A nationwide cohort study was conducted involving 1,182,751 middle-aged adults aged 40 to 65 years, all of whom had no history of diabetes or cardiovascular disease. The primary outcomes of our study included incident DM, composite MACE and all-cause mortality. Results Among the participants, 24.6% were diagnosed with prediabetes, while 8.8% had FLI ≥ 60 at baseline. Both conditions independently increased the risk of incident DM, composite MACE, and all-cause mortality. Stratification based on the presence of prediabetes and FLI ≥ 60 showed that their combination posed the highest risk for outcomes, even after adjusting for relevant covariates. For incident DM, the odds ratios (ORs) with 95% confidence intervals (CI) were as follows: 3.75 (3.69–3.81), 2.35 (2.29–2.42), and 6.80 (6.62–6.98) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. For composite MACE, the ORs (95% CI) were 1.02 (1.00–1.05), 1.23 (1.17–1.28), and 1.27 (1.21–1.33) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. For all-cause mortality, ORs (95% CI) were 1.12 (1.08–1.15), 1.51 (1.43–1.59), and 1.69 (1.60–1.79) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. Conclusion The coexistence of prediabetes and FLI ≥ 60, which is a surrogate marker of hepatic steatosis, demonstrated a combined effect, additively increasing the risk of incident DM, composite MACE, and all-cause mortality in middle-aged adults. Trial registration Not applicable (retrospectively registered). Graphical abstract
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series Cardiovascular Diabetology
spelling doaj-art-42f28337c2cf41ac8561e4f8d9a81a502025-08-20T03:42:44ZengBMCCardiovascular Diabetology1475-28402025-07-0124111110.1186/s12933-025-02793-7Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort studyYoung Sang Lyu0Minae Park1Hee Kyung Kim2Sojeong Park3Ji Yong Park4A Ram Hong5Jee Hee Yoon6Seogsong Jeong7Youngmin Yoon8Jin Hwa Kim9Sang Yong Kim10Ho-Cheol Kang11Wonsuk Choi12Division of Endocrinology and Metabolism, Department of Internal Medicine, Chosun University HospitalData Science Team, Hanmi Pharm. Co., Ltd.Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolData Science Team, Hanmi Pharm. Co., Ltd.Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolDepartment of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolDepartment of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolDepartment of Biomedical Informatics, Korea University College of MedicineDivision of Nephrology, Department of Medicine, Chosun University Hospital, Chosun University School of MedicineDivision of Endocrinology and Metabolism, Department of Internal Medicine, Chosun University HospitalDivision of Endocrinology and Metabolism, Department of Internal Medicine, Chosun University HospitalDepartment of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolDepartment of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical SchoolAbstract Background To investigate the combined effect of prediabetes and fatty liver index on incident diabetes (DM), major adverse cardiovascular events (MACE), and mortality in middle-aged adults. Methods A nationwide cohort study was conducted involving 1,182,751 middle-aged adults aged 40 to 65 years, all of whom had no history of diabetes or cardiovascular disease. The primary outcomes of our study included incident DM, composite MACE and all-cause mortality. Results Among the participants, 24.6% were diagnosed with prediabetes, while 8.8% had FLI ≥ 60 at baseline. Both conditions independently increased the risk of incident DM, composite MACE, and all-cause mortality. Stratification based on the presence of prediabetes and FLI ≥ 60 showed that their combination posed the highest risk for outcomes, even after adjusting for relevant covariates. For incident DM, the odds ratios (ORs) with 95% confidence intervals (CI) were as follows: 3.75 (3.69–3.81), 2.35 (2.29–2.42), and 6.80 (6.62–6.98) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. For composite MACE, the ORs (95% CI) were 1.02 (1.00–1.05), 1.23 (1.17–1.28), and 1.27 (1.21–1.33) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. For all-cause mortality, ORs (95% CI) were 1.12 (1.08–1.15), 1.51 (1.43–1.59), and 1.69 (1.60–1.79) for prediabetes with FLI < 60, normoglycemia with FLI ≥ 60, and prediabetes with FLI ≥ 60, respectively. Conclusion The coexistence of prediabetes and FLI ≥ 60, which is a surrogate marker of hepatic steatosis, demonstrated a combined effect, additively increasing the risk of incident DM, composite MACE, and all-cause mortality in middle-aged adults. Trial registration Not applicable (retrospectively registered). Graphical abstracthttps://doi.org/10.1186/s12933-025-02793-7PrediabetesHepatic steatosisMiddle-aged adultCardiometabolic diseaseCohort study
spellingShingle Young Sang Lyu
Minae Park
Hee Kyung Kim
Sojeong Park
Ji Yong Park
A Ram Hong
Jee Hee Yoon
Seogsong Jeong
Youngmin Yoon
Jin Hwa Kim
Sang Yong Kim
Ho-Cheol Kang
Wonsuk Choi
Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
Cardiovascular Diabetology
Prediabetes
Hepatic steatosis
Middle-aged adult
Cardiometabolic disease
Cohort study
title Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
title_full Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
title_fullStr Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
title_full_unstemmed Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
title_short Combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults: a nationwide cohort study
title_sort combined impact of prediabetes and fatty liver index on cardiometabolic outcomes and mortality in middle aged adults a nationwide cohort study
topic Prediabetes
Hepatic steatosis
Middle-aged adult
Cardiometabolic disease
Cohort study
url https://doi.org/10.1186/s12933-025-02793-7
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