Epidemiology and Health

Original Articles

Prevalence of cardiovascular-kidney-metabolic syndrome in Korea: Korea National Health and Nutrition Examination Survey 2011-2021: Sung-Bin Hong, Ji-Eun Kim, Seung Seok Han, Joseph J. Shearer, Jungnam Joo, Ji-Yeob Choi, Véronique L. Roger; Epidemiol Health. 2025;47:e2025005. Published online February 14, 2025; DOI: https://doi.org/10.4178/epih.e2025005

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
The American Heart Association (AHA) recently defined cardiovascular-kidney-metabolic (CKM) syndrome to better characterize the associations among cardiovascular, kidney, and metabolic diseases. Although about 9 in 10 United States adults have at least 1 risk factor for CKM syndrome, its prevalence in other populations is less understood. To fill this gap, we examined the prevalence of CKM syndrome in Korea and its association with demographic and socioeconomic status (SES).

METHODS

Using data from the Korean National Health and Nutrition Examination Survey between 2011 and 2021, we calculated the prevalence of CKM syndrome across the following stages: stage 0 (no risk factors), stage 1 (excess or dysfunctional adiposity), stage 2 (other metabolic risk factors or chronic kidney disease), and stages 3-4 (subclinical/clinical cardiovascular diseases) among adults aged ≥20 years. Weighted analyses were used to estimate prevalence and 95% confidence intervals (CIs) for each CKM syndrome stage, stratified by age, gender, and SES factors.

RESULTS

Among 54,994 Korean adults, the prevalence of CKM syndrome was as follows: stage 0 (25.2%; 95% CI, 24.7 to 25.8), stage 1 (19.3%; 95% CI, 18.9 to 19.7), stage 2 (51.6%; 95% CI, 51.1 to 52.2), and stages 3-4 (3.9%; 95% CI, 3.7 to 4.0). The prevalence of stages 2 and 3-4 was higher in men than in women. In addition, stages 3-4 were more prevalent among rural residents and those with lower education or income.

CONCLUSIONS

About 3 out of 4 Koreans are at risk for CKM syndrome. These findings highlight that CKM syndrome is a global health problem and that interventions are urgently needed to prevent further progression.

Summary

Korean summary
최근, 심장-신장-대사 증후군을 하나로 묶어 관리하는 것의 필요성이 대두되고 있다. 본 연구 결과 20세 이상의 한국 성인들의 74.8%가 심장-신장-대사 증후군의 위험군에 속해 있었다. 또한 그 정도가 증가하는 추세로 나타나 적절한 관리가 필요해 보인다.

Key Message
Recently, the need for an integrated approach to managing cardiovascular-kidney-metabolic (CKM) syndrome has been emphasized. This study found that 74.8% of Korean adults aged 20 and older had a risk for CKM syndrome. Moreover, the prevalence is increasing, highlighting the necessity of proper management.

Citations

Citations to this article as recorded by

Relationship between estimated pulse wave velocity trajectories and cardiovascular disease risk in patients with cardiovascular-kidney-metabolic syndrome stages 0–3
Tingting Chen, Huangyi Yin, Yubo Zhou, Min Liang
Nutrition, Metabolism and Cardiovascular Diseases.2025; : 104192. CrossRef

Effect of long-term blood pressure trajectory on the future development of chronic kidney disease: an analysis of data from the Korean National Insurance Health Checkup Study: Wonmook Hwang, Eu Jin Lee, Jae-Hyeong Park, Soon-Ki Ahn; Epidemiol Health. 2024;46:e2024090. Published online November 19, 2024; DOI: https://doi.org/10.4178/epih.e2024090

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Abstract Summary PDF Supplementary Material

Abstract

OBJECTIVES
Chronic kidney disease (CKD) is a prevalent health issue that causes the irreversible loss of functioning nephrons, end-stage renal disease, cardiovascular disease, and premature mortality. Hypertension is the leading cause of CKD. However, the effect of long-term blood pressure (BP) changes on the development of CKD is still unknown. Therefore, the current study investigated the association between BP trajectory and the future development of CKD.

METHODS

In this study, 246,874 individuals aged ≥40 years who underwent health examinations during the screening period (2002-2009) were evaluated. The systolic blood pressure (SBP) trajectory was determined using latent-class mixture modeling. New-onset CKD was identified during the follow-up period (2010-2019). The association between SBP trajectories and new-onset CKD was assessed.

RESULTS

In total, 111,900 adults (53,420 females, 51.9±6.4 years old) presented with 2 SBP trajectory classes: class 1 (n=66,935) and class 2 (n=44,965). During the follow-up period, patients with SBP trajectory class 2 had an approximately 2.1-fold increased risk of developing CKD (unadjusted hazard ratio [HR], 2.11; 95% confidence interval [CI], 1.99 to 2.25; p<0.001). In the multivariate analysis adjusted for other significant variables, SBP trajectory class 2 was significantly associated with CKD in males (HR, 1.09; 95% CI, 1.00 to 1.19; p=0.037), but not in females (HR, 1.06; 95% CI, 0.95 to 1.18; p=0.321).

CONCLUSIONS

An elevated longitudinal BP was associated with a higher incidence of CKD in male participants aged ≥40 years. Nevertheless, further studies are needed to validate the clinical significance of an elevated SBP trajectory on CKD development.

Summary

Korean summary
궤적분석으로 평가한 수축기 혈압의 지속적 상승은 40세 이상의 남성 피험자에서 만성 신장 질환 발생률 증가와 관련이 있었다.

Key Message
Elevated longitudinal systolic blood pressure, as determined by trajectory, was found to be associated with an increased risk of developing chronic kidney disease in male subjects over the age of 40.

Citations

Citations to this article as recorded by

Chronic kidney disease and sex dimorphism
Sarah Abu Kar, Raymond C. Harris
Current Opinion in Nephrology & Hypertension.2025; 34(4): 314. CrossRef
Dynamic changes in metabolic syndrome components and chronic kidney disease risk: a population-based prospective cohort study
Yue Huang, Rong Fu, Juwei Zhang, Jinsong Zhou, Siting Chen, Zheng Lin, Xiaoxu Xie, Zhijian Hu
BMC Endocrine Disorders.2025;[Epub] CrossRef

The associations of cardiovascular and lifestyle factors with mortality from chronic kidney disease as the underlying cause: the JACC study: Shuai Guo, Tomoko Sankai, Kazumasa Yamagishi, Tomomi Kihara, Akiko Tamakoshi, Hiroyasu Iso, for the JACC Study Group; Epidemiol Health. 2024;46:e2024077. Published online September 13, 2024; DOI: https://doi.org/10.4178/epih.e2024077

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Abstract PDF: Abstract
OBJECTIVES
This study investigated conventional cardiovascular and lifestyle risk factors affecting mortality from chronic kidney disease as the underlying cause in the general Japanese population.
METHODS
We conducted an 18.8-year follow-up study of 44,792 men and 61,522 women aged 40-79 from the Japan Collaborative Cohort Study for Evaluation of Cancer Risk between 1986 and 1990. Cox proportional hazard models were used to analyze the association between risk factors and mortality from chronic kidney disease.
RESULTS
During the follow-up period, 373 participants (185 men and 188 women) died from chronic kidney disease. A body mass index of ≥27.0 kg/m<sup>2</sup> (hazard ratio [HR], 2.00; 95% confidence interval [CI], 1.19 to 3.36 for men and HR, 1.91; 95% CI, 1.19 to 3.07 for women, compared with 23.0-24.9 kg/m2), a history of hypertension (HR, 2.32; 95% CI, 1.67 to 3.22 for men and HR, 2.01; 95% CI, 1.44 to 2.81 for women) and a history of diabetes mellitus (HR, 5.21; 95% CI, 3.68 to 7.37 for men and HR, 7.10; 95% CI, 4.93 to 10.24 for women) were associated with an increased risk of mortality from chronic kidney disease in both genders. In men, smoking was also associated with an increased risk (HR, 1.91; 95% CI, 1.25 to 2.90), while current drinking (HR, 0.58; 95% CI, 0.34 to 0.98 for <23 g/day; HR, 0.48; 95% CI, 0.29 to 0.80 for 23-45 g/day and HR, 0.53; 95% CI, 0.32 to 0.86 for ≥46 g/day) and exercising ≥5 hr/wk (HR, 0.42; 95% CI, 0.18 to 0.96) were associated with a lower risk. Similar but non-significant associations for smoking and drinking were observed in women.
CONCLUSIONS
In addition to a history of hypertension and a history of diabetes mellitus, body mass index, smoking status, drinking status, and exercise habits were associated with the risk of mortality from chronic kidney disease.; Summary

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