Stan R Ursem, Raymond Noordam, Jesse M van den Berg, Anita Boelen, Petra Jm Elders, Wendy Pj den Elzen, Annemieke C Heijboer
{"title":"Subclinical Hyperthyroidism, Cardiovascular Disease and All-Cause Mortality: Insights from a Large Dutch Primary Care Cohort Study.","authors":"Stan R Ursem, Raymond Noordam, Jesse M van den Berg, Anita Boelen, Petra Jm Elders, Wendy Pj den Elzen, Annemieke C Heijboer","doi":"10.1177/10507256261449444","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Subclinical hyperthyroidism (SHT) has been associated with adverse cardiovascular outcomes, but the magnitude and consistency of these risks, particularly across demographic subgroups, remain unclear.</p><p><strong>Methods: </strong>We conducted a retrospective cohort study using general practitioner (GP) data from the PHARMO Data Network in the Netherlands (2012-2021). Patients with biochemically confirmed SHT (suppressed thyrotropin [TSH] with normal fT4; <i>n</i> = 11,163) were compared with a matched euthyroid reference group (<i>n</i> = 46,058) based on age, sex, and GP practice. Incidence of atherosclerotic complications, atrial fibrillation (AF), heart failure (HF), and all-cause mortality were assessed. Multivariable-adjusted Cox regression models estimated hazard ratios (HRs), adjusting for relevant confounders. Due to data limitations, information on smoking and alcohol use was not available, and medical history concerning comorbid conditions could only be assessed for the one-year period prior to cohort entry.</p><p><strong>Results: </strong>SHT was associated with a significantly increased risk of AF (HR: 1.37, 95% CI: 1.22-1.55), particularly in those with TSH < 0.1 mU/L (HR: 1.60, 1.32-1.94) and in individuals aged 30-49 years (HR 1.88, 1.05-3.36). HF risk was modestly elevated overall (HR: 1.21, 1.04-1.40), with stronger effects in individuals aged 30-49 years (HR: 3.74, 1.52-9.24) and women (HR: 1.31, 1.10-1.56). All-cause mortality was higher in the SHT group (HR: 1.51, 1.38-1.64), especially in men (HR: 1.75, 1.50-2.05) and individuals aged 30-49 years (HR: 2.95, 1.73-5.04). The association with atherosclerotic complications was weak-to-modest (HR: 1.12, 1.00-1.24).</p><p><strong>Conclusions: </strong>SHT is linked to increased risks of AF, HF, and all-cause mortality, with higher relative risks in younger patients. These findings challenge the traditional focus on older populations and underscore the need for individualized risk assessment in SHT.</p>","PeriodicalId":23016,"journal":{"name":"Thyroid","volume":" ","pages":"10507256261449444"},"PeriodicalIF":6.7000,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thyroid","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1177/10507256261449444","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENDOCRINOLOGY & METABOLISM","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Subclinical hyperthyroidism (SHT) has been associated with adverse cardiovascular outcomes, but the magnitude and consistency of these risks, particularly across demographic subgroups, remain unclear.
Methods: We conducted a retrospective cohort study using general practitioner (GP) data from the PHARMO Data Network in the Netherlands (2012-2021). Patients with biochemically confirmed SHT (suppressed thyrotropin [TSH] with normal fT4; n = 11,163) were compared with a matched euthyroid reference group (n = 46,058) based on age, sex, and GP practice. Incidence of atherosclerotic complications, atrial fibrillation (AF), heart failure (HF), and all-cause mortality were assessed. Multivariable-adjusted Cox regression models estimated hazard ratios (HRs), adjusting for relevant confounders. Due to data limitations, information on smoking and alcohol use was not available, and medical history concerning comorbid conditions could only be assessed for the one-year period prior to cohort entry.
Results: SHT was associated with a significantly increased risk of AF (HR: 1.37, 95% CI: 1.22-1.55), particularly in those with TSH < 0.1 mU/L (HR: 1.60, 1.32-1.94) and in individuals aged 30-49 years (HR 1.88, 1.05-3.36). HF risk was modestly elevated overall (HR: 1.21, 1.04-1.40), with stronger effects in individuals aged 30-49 years (HR: 3.74, 1.52-9.24) and women (HR: 1.31, 1.10-1.56). All-cause mortality was higher in the SHT group (HR: 1.51, 1.38-1.64), especially in men (HR: 1.75, 1.50-2.05) and individuals aged 30-49 years (HR: 2.95, 1.73-5.04). The association with atherosclerotic complications was weak-to-modest (HR: 1.12, 1.00-1.24).
Conclusions: SHT is linked to increased risks of AF, HF, and all-cause mortality, with higher relative risks in younger patients. These findings challenge the traditional focus on older populations and underscore the need for individualized risk assessment in SHT.
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This authoritative journal program, including the monthly flagship journal Thyroid, Clinical Thyroidology® (monthly), and VideoEndocrinology™ (quarterly), delivers in-depth coverage on topics from clinical application and primary care, to the latest advances in diagnostic imaging and surgical techniques and technologies, designed to optimize patient care and outcomes.
Thyroid is the leading, peer-reviewed resource for original articles, patient-focused reports, and translational research on thyroid cancer and all thyroid related diseases. The Journal delivers the latest findings on topics from primary care to clinical application, and is the exclusive source for the authoritative and updated American Thyroid Association (ATA) Guidelines for Managing Thyroid Disease.