Cited by 862Thyroid Disorders and TreatmentsThyroid and Parathyroid SurgeryHormonal and reproductive studies

Thyroid Status, Cardiovascular Risk, and Mortality in Older Adults

Cappola, Anne R., Fried, Linda P., Arnold, Alice M., Danese, Mark D., Kuller, Lewis H., Burke, Gregory L., Tracy, Russell P., Ladenson, Paul W.·2006·JAMA

Abstract

CONTEXT: Previous studies have suggested that subclinical abnormalities in thyroid-stimulating hormone levels are associated with detrimental effects on the cardiovascular system. OBJECTIVE: To determine the relationship between baseline thyroid status and incident atrial fibrillation, incident cardiovascular disease, and mortality in older men and women not taking thyroid medication. DESIGN, SETTING, AND PARTICIPANTS: A total of 3233 US community-dwelling individuals aged 65 years or older with baseline serum thyroid-stimulating hormone levels were enrolled in 1989-1990 in the Cardiovascular Health Study, a large, prospective cohort study. MAIN OUTCOME MEASURES: Incident atrial fibrillation, coronary heart disease, cerebrovascular disease, cardiovascular death, and all-cause death assessed through June 2002. Analyses are reported for 4 groups defined according to thyroid function test results: subclinical hyperthyroidism, euthyroidism, subclinical hypothyroidism, and overt hypothyroidism. RESULTS: Individuals with overt thyrotoxicosis (n = 4) were excluded because of small numbers. Eighty-two percent of participants (n = 2639) had normal thyroid function, 15% (n = 496) had subclinical hypothyroidism, 1.6% (n = 51) had overt hypothyroidism, and 1.5% (n = 47) had subclinical hyperthyroidism. After exclusion of those with prevalent atrial fibrillation, individuals with subclinical hyperthyroidism had a greater incidence of atrial fibrillation compared with those with normal thyroid function (67 events vs 31 events per 1000 person-years; adjusted hazard ratio, 1.98; 95% confidence interval, 1.29-3.03). No differences were seen between the subclinical hyperthyroidism group and euthyroidism group for incident coronary heart disease, cerebrovascular disease, cardiovascular death, or all-cause death. Likewise, there were no differences between the subclinical hypothyroidism or overt hypothyroidism groups and the euthyroidism group for cardiovascular outcomes or mortality. Specifically, individuals with subclinical hypothyroidism had an adjusted hazard ratio of 1.07 (95% confidence interval, 0.90-1.28) for incident coronary heart disease. CONCLUSION: Our data show an association between subclinical hyperthyroidism and development of atrial fibrillation but do not support the hypothesis that unrecognized subclinical hyperthyroidism or subclinical hypothyroidism is associated with other cardiovascular disorders or mortality.

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Crossref · 10.1001/jama.295.9.1033

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  • A high TSH level within the normal range appears to be protective and has been shown to be associated with reduced mortality risk in older euthyroid individuals.

    “A high TSH level within the normal range appears to be protective and has been shown to be associated with reduced mortality risk in older euthyroid individuals.149”

    From Hypothyroidism (2024) · cites this paper as [149]

  • Cardiac adverse events including tachycardia, palpitations and atrial fibrillation arise from increased myocardial oxygen consumption and enhanced beta-adrenergic sensitivity.

    “Cardiac AEs, including tachycardia, palpitations and atrial fibrillation, arise from increased myocardial oxygen consumption and enhanced β‐adrenergic sensitivity.”
  • Cardiovascular symptoms are the most frequent indicators of mild thyroid hormone excess in the elderly, similar to overt hyperthyroidism.

    “Cardiovascular symptoms are the most frequent indicators of mild thyroid hormone excess in the elderly, similar to overt hyperthyroidism [52,53] .”
  • A 2- to 3-fold increased risk of atrial fibrillation was associated with subclinical hyperthyroidism in elderly subjects in two large prospective studies.

    “A 2-to 3-fold increased risk of atrial fibrillation (AF) was associated with SHyper in elderly subjects in two large prospective studies [52,53] .”
  • An increased incidence of atrial fibrillation has been observed in elderly persons with low serum TSH (0.1-0.5 mIU/l) with hazard ratios of 1.6 (95% CI 1.0-2.5) and 1.85 (95% CI 1.14-3.00).

    “An increased incidence of AF has also been observed in elderly persons with low serum TSH (0.1-0.5 mIU/l) with an HR of 1.6 (95% CI: 1.0-2.5)[52] and 1.85 (95% CI: 1.14-3.00)[53] .”

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Authors
Cappola, A. R., Fried, L. P., Arnold, A. M., Danese, M. D., Kuller, L. H., Burke, G. L., Tracy, R. P., & Ladenson, P. W.
Affiliations
  • University of Pennsylvania Health System (US)
  • Johns Hopkins University (US)
  • University of Washington (US)
  • University of Pittsburgh (US)
  • Wake Forest University (US)
  • University of Vermont (US)
Corresponding author
Cappola, Anne R.
Venue
JAMA
Published
2006-03-01
Volume
295
Issue
9
Pages
1033
ISSN
  • 0002-9955 (ISSN-L)
  • 0098-7484
OpenAlex
W1965686740
Cited by
862
References
47
Citations by year
2026: 13 · 2025: 26 · 2024: 41 · 2023: 46 · 2022: 39 · 2021: 35 · 2020: 40 · 2019: 32 · 2018: 42 · 2017: 45 · 2016: 44 · 2015: 39 · 2014: 61 · 2013: 62 · 2012: 64
FWCI
32.60
Type
journal article
Language
en
Open access
closed
Locations
  • JAMA (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • National Institutes of Health (n01hc085082-026, n01hc085081-021, n01hc085079-024, n01hc015103-009, n01hc085084-005, n01hc085085-011, n01hc085083-027, n01hc085080-026, n01hc085086-022, n01hc035129-010)
  • National Institute on Aging (N01HC85079, N01 HC‐15103, N01‐HC‐35129, K23AG19161, N01‐HC‐85086, K23AG019161)
  • National Heart, Lung, and Blood Institute (N01-HC-85081, N01HC85085, N01 HC085086, N01HC-85083, N01HC15103, N01 HC085079, N01HC85082, N01 HC85086, N01 HC035129, N01HC85080, N01 HC015103, N01-HC85079, ­N01-HC85084, N01HC35129)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Surgery › Thyroid and Parathyroid Surgery
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
Keywords
subclinical hypothyroidism, overt hypothyroidism, thyroid-stimulating hormone, atrial fibrillation, cardiovascular disease, coronary artery disease, cerebrovascular disease, cardiovascular mortality, all-cause mortality, older adults, thyroid function, Cardiovascular Health Study, sex differences, hormone replacement therapy
MeSH terms
Aged, Atrial Fibrillation, Cardiovascular Diseases, Female, Humans, Hyperthyroidism, Hypothyroidism, Male, Risk Factors, Thyroid Gland, Thyrotropin, Proportional Hazards Models

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