Cited by 79Thyroid Disorders and TreatmentsHormonal and reproductive studiesThyroid and Parathyroid Surgery

Is subclinical hypothyroidism a cardiovascular risk factor in the elderly?

Pasqualetti, Giuseppe, Tognini, Sara, Polini, Antonio, Caraccio, Nadia, Monzani, Fabio·2013·The Journal of Clinical Endocrinology & Metabolism

Abstract

CONTEXT: The negative impact of subclinical hypothyroidism (sHT) on cardiovascular risk, widely recognized in young adults (aged <55-60 y), is still debated in the elderly (>65 y), especially in the oldest olds (>80 y). EVIDENCE ACQUISITION: We searched Medline for reports published with the following search terms: "hypothyroidism," "subclinical hypothyroidism," "ageing," "elderly," "L-thyroxin," "thyroid," "guidelines," "treatment," "quality of life," "cardiovascular risk," "heart failure," "coronary heart disease" (CHD), "atherosclerosis," and "endothelial dysfunction." We limited our search to reports in English published after 1980, although we incorporated some reports published before 1980. We supplemented the search with records from personal files, textbooks, and relevant articles. Analyzed parameters included the epidemiology of thyroid failure, the effect of thyroid hormone on the aging process, cardiovascular function, and CHD risk factors. We also included the potential benefits of L-T4 therapy on the quality of life, cardiovascular events, and survival. EVIDENCE SYNTHESIS: TSH levels increase with age, even in older people without thyroid disease. Most longitudinal studies show an increased risk for CHD events and mortality in sHT participants. This increase is less evident in the elderly, mainly in cases of serum TSH values above 10 mIU/L. Lower mortality rate in a cohort of the oldest olds (>85 y) has been reported. CONCLUSIONS: sHT in older people should be not regarded as a unique condition, and moderately old patients (aged <70-75 y) could be considered clinically similar to the adult population, albeit with a higher optimal TSH target value. Conversely, the oldest old subjects should be carefully followed with a wait-and-see strategy, generally avoiding hormonal treatment. The decision to treat elderly people is still an unresolved clinical challenge--first, due to a lack of appropriately powered randomized controlled trials of L-T4 in sHT patients, examining cardiovascular hard endpoints in various classes of age; and second, because of the negative effects of possible overtreatment.

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  • There may be age-related differences in the vascular risk associated with a raised serum TSH, with higher risks in younger individuals that attenuate with advancing age.

    “This led us and others to suggest that there may be age-related differences in the vascular risk associated with a raised serum TSH, with higher risks found in younger individuals that attenuated with advancing age (27, 39, 40).”

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Research works printed but not linked: 4

  1. Tan ZS, Beiser A, Vasan RS, et al. Thyroid function and the risk of Alzheimer disease: the Framingham Study. Arch Intern Med. 2008; 168:1514 -1520.
  2. Surks MI, Hollowell JG. Age-specific distribution of serum thyro- tropin and antithyroid antibodies in the US population: implica- tions for the prevalence of subclinical hypothyroidism. J Clin En- docrinol Metab. 2007;92:4575-4582.
  3. Cooper DS. Clinical practice. Subclinical hypothyroidism. N Engl J Med. 2001;345:260 -265.
  4. Save the Date for Endocrine Board Review (EBR), September 24-25, 2013, Hyatt Regency New Orleans New Orleans, LA www.endo-society.org/CEU2013

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Authors
Pasqualetti, G., Tognini, S., Polini, A., Caraccio, N., & Monzani, F.
Affiliations
University of Pisa (IT)
Corresponding author
Monzani, Fabio
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2013-06-01
Volume
98
Issue
6
Pages
2256-2266
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W1985671574
Cited by
79
References
114
Citations by year
2026: 1 · 2025: 4 · 2024: 1 · 2023: 5 · 2022: 3 · 2021: 4 · 2020: 7 · 2019: 6 · 2018: 8 · 2017: 5 · 2016: 6 · 2015: 11 · 2014: 13 · 2013: 5
FWCI
1.72
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
Funders
Università di Pisa
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal and reproductive studies
  • Health Sciences › Medicine › Surgery › Thyroid and Parathyroid Surgery
Keywords
subclinical hypothyroidism, cardiovascular risk, older adults, oldest old, thyroxine therapy, coronary artery disease, mortality, overtreatment, wait-and-see strategy, aging, quality of life
MeSH terms
Aged, Aged, 80 and over, Cardiovascular Diseases, Coronary Disease, Female, Heart Failure, Humans, Hypothyroidism, Male, Risk Factors, Sex Characteristics, Thyrotropin

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