Yunyun Liu, Chi Pang Wen, Junlong Pan, Jiameng Cui, Wanzhu Lu, Tong Sun, Xian Ning, June Han Lee, Wenyuan Li, Huakang Tu, Xifeng Wu
{"title":"血清铁及其状态变化与死亡风险的关系:来自MJ队列的前瞻性发现。","authors":"Yunyun Liu, Chi Pang Wen, Junlong Pan, Jiameng Cui, Wanzhu Lu, Tong Sun, Xian Ning, June Han Lee, Wenyuan Li, Huakang Tu, Xifeng Wu","doi":"10.1007/s10654-025-01295-w","DOIUrl":null,"url":null,"abstract":"<p><p>Previous studies on serum iron levels and mortality risk have yielded inconsistent findings based on single-point measurements. How serum iron levels and their longitudinal changes influence all-cause and cause-specific mortality remains unknown. This study investigated associations between baseline serum iron levels, their longitudinal changes, and all-cause and cause-specific mortality in a prospective cohort. Participants were recruited from the Taiwan MJ cohort (1997-2007) and followed until December 31, 2022. Baseline serum iron was categorized as low, normal, or high. Based on changes at a second visit, participants were further classified as persistent normal, progression to abnormal, reversion to normal, or persistent abnormal. Cox proportional hazard models were used for analysis. Over a median follow-up of 19.0 years, 33,005 deaths occurred. Fully adjusted models demonstrated J-shaped associations between serum iron and all-cause and cause-specific mortality (all P < 0.001), with higher all-cause mortality risks in low (HR 1.27, 95% CI [1.23, 1.31]) and high iron groups (HR 1.37, 95% CI [1.30, 1.44]). Compared to persistent normal levels, those with progression to abnormal, reversion to normal, or persistent abnormal serum iron exhibited elevated mortality risks (HRs: 1.22 [1.15, 1.30], 1.16 [1.09, 1.24], 1.49 [1.36, 1.63], respectively). Moreover, maintaining normal serum iron status alongside a healthy lifestyle exhibited the lowest mortality risks. Long term abnormal serum iron status was linked to increased mortality, which could be mitigated through lifestyle modifications, suggesting significance of serum iron monitoring and potential intervention.</p>","PeriodicalId":11907,"journal":{"name":"European Journal of Epidemiology","volume":" ","pages":""},"PeriodicalIF":5.9000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Associations of serum iron and its status change with mortality risk: prospective findings from the MJ cohort.\",\"authors\":\"Yunyun Liu, Chi Pang Wen, Junlong Pan, Jiameng Cui, Wanzhu Lu, Tong Sun, Xian Ning, June Han Lee, Wenyuan Li, Huakang Tu, Xifeng Wu\",\"doi\":\"10.1007/s10654-025-01295-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Previous studies on serum iron levels and mortality risk have yielded inconsistent findings based on single-point measurements. How serum iron levels and their longitudinal changes influence all-cause and cause-specific mortality remains unknown. This study investigated associations between baseline serum iron levels, their longitudinal changes, and all-cause and cause-specific mortality in a prospective cohort. Participants were recruited from the Taiwan MJ cohort (1997-2007) and followed until December 31, 2022. Baseline serum iron was categorized as low, normal, or high. Based on changes at a second visit, participants were further classified as persistent normal, progression to abnormal, reversion to normal, or persistent abnormal. Cox proportional hazard models were used for analysis. Over a median follow-up of 19.0 years, 33,005 deaths occurred. Fully adjusted models demonstrated J-shaped associations between serum iron and all-cause and cause-specific mortality (all P < 0.001), with higher all-cause mortality risks in low (HR 1.27, 95% CI [1.23, 1.31]) and high iron groups (HR 1.37, 95% CI [1.30, 1.44]). Compared to persistent normal levels, those with progression to abnormal, reversion to normal, or persistent abnormal serum iron exhibited elevated mortality risks (HRs: 1.22 [1.15, 1.30], 1.16 [1.09, 1.24], 1.49 [1.36, 1.63], respectively). Moreover, maintaining normal serum iron status alongside a healthy lifestyle exhibited the lowest mortality risks. Long term abnormal serum iron status was linked to increased mortality, which could be mitigated through lifestyle modifications, suggesting significance of serum iron monitoring and potential intervention.</p>\",\"PeriodicalId\":11907,\"journal\":{\"name\":\"European Journal of Epidemiology\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":5.9000,\"publicationDate\":\"2025-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"European Journal of Epidemiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1007/s10654-025-01295-w\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Epidemiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s10654-025-01295-w","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH","Score":null,"Total":0}
Associations of serum iron and its status change with mortality risk: prospective findings from the MJ cohort.
Previous studies on serum iron levels and mortality risk have yielded inconsistent findings based on single-point measurements. How serum iron levels and their longitudinal changes influence all-cause and cause-specific mortality remains unknown. This study investigated associations between baseline serum iron levels, their longitudinal changes, and all-cause and cause-specific mortality in a prospective cohort. Participants were recruited from the Taiwan MJ cohort (1997-2007) and followed until December 31, 2022. Baseline serum iron was categorized as low, normal, or high. Based on changes at a second visit, participants were further classified as persistent normal, progression to abnormal, reversion to normal, or persistent abnormal. Cox proportional hazard models were used for analysis. Over a median follow-up of 19.0 years, 33,005 deaths occurred. Fully adjusted models demonstrated J-shaped associations between serum iron and all-cause and cause-specific mortality (all P < 0.001), with higher all-cause mortality risks in low (HR 1.27, 95% CI [1.23, 1.31]) and high iron groups (HR 1.37, 95% CI [1.30, 1.44]). Compared to persistent normal levels, those with progression to abnormal, reversion to normal, or persistent abnormal serum iron exhibited elevated mortality risks (HRs: 1.22 [1.15, 1.30], 1.16 [1.09, 1.24], 1.49 [1.36, 1.63], respectively). Moreover, maintaining normal serum iron status alongside a healthy lifestyle exhibited the lowest mortality risks. Long term abnormal serum iron status was linked to increased mortality, which could be mitigated through lifestyle modifications, suggesting significance of serum iron monitoring and potential intervention.
期刊介绍:
The European Journal of Epidemiology, established in 1985, is a peer-reviewed publication that provides a platform for discussions on epidemiology in its broadest sense. It covers various aspects of epidemiologic research and statistical methods. The journal facilitates communication between researchers, educators, and practitioners in epidemiology, including those in clinical and community medicine. Contributions from diverse fields such as public health, preventive medicine, clinical medicine, health economics, and computational biology and data science, in relation to health and disease, are encouraged. While accepting submissions from all over the world, the journal particularly emphasizes European topics relevant to epidemiology. The published articles consist of empirical research findings, developments in methodology, and opinion pieces.