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• W3023532012 abstract "Abstract Abstract: Introduction: Thyrotropin (TSH) levels on average are higher and vary more widely among older adults.1 Large meta-analyses and treatment trials for isolated elevated TSH in older adults did not demonstrate harm from no treatment or benefit from treatment in this population.2 Isolated, elevated TSH can result from adaptations to aging, rather than primary thyroid disease, suggesting that thyroid hormone treatment could actually cause harm.3 Objective:To determine if there is a survival effect from thyroid hormone treatment in adults aged 65+. Methodology:Thyroid functional status and thyroid hormone exposure were analyzed for 1,258 participants of the BLSA aged 65+ through death or end of follow up. We analyzed exposures by visit and also compared survival between individuals with consistently elevated, euthyroid or low TSH both on and off of therapy.Incident rate ratios (IRR) were calculated using time-dependent Poisson regression models. Covariates included age, sex, race, walking index (measure of physical function), self-rated health (SF-12), body mass index (BMI), smoking and comorbidity score. Results: Average follow-up was 9 years, with 169 deaths over the study period. The cohort comprised 49.5% women, with average age in the study being 78 years (SD ±8.2). Thyroid hormone use trended towards harm analyzed at each visit with an IRR=1.40 (95% CI 0.93–2.12) after adjusting for other covariates. Among ‘treated-to-target’versus euthyroid individuals, thyroid hormone use was associated with a significantly increased mortality rate with an IRR=1.80 (95% CI 1.09–2.96) in multivariable analysis. Conclusion: Thyroid hormone replacement among older adults,even when treated-to-target, is associated with a significantly increased mortality risk compared to euthyroid individuals with no history of thyroid hormone exposure. This suggests that treating isolated elevated TSH when changes are aging adaptations rather than primary thyroid disease could adversely affect health by altering key homeostatic adaptation. We recommend clinicians consider the underlying physiology of aging and employ age specific reference ranges when deciding on treatment for elevated TSH in older adults.4References 1. Surks et al., J Clin Endo. Met. 2007;92(12):4575–4582. 2. Stott et al., NEJM. 2017;376(26):2534–2544. 3. Mammen et al., Thyroid. 2017;27(11):1370–1377. 4. Surks et al., J Clin Endo. Met. 2010:95(2):496-502Unless otherwise noted, all abstracts presented at ENDO are embargoed until the date and time of presentation. For oral presentations, the abstracts are embargoed until the session begins. Abstracts presented at a news conference are embargoed until the date and time of the news conference. The Endocrine Society reserves the right to lift the embargo on specific abstracts that are selected for promotion prior to or during ENDO." @default.
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• W3023532012 date "2020-04-01" @default.
• W3023532012 modified "2023-10-07" @default.
• W3023532012 title "OR18-05 Thyroid Hormone Use and Survival among Older Adults - Longitudinal Analysis of the Baltimore Longitudinal Study of Aging (BLSA)" @default.
• W3023532012 doi "https://doi.org/10.1210/jendso/bvaa046.235" @default.
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