SynthesisReviews in endocrine & metabolic disorders2025
Body composition changes across a spectrum of hypothyroidism severity - a systematic review and meta-analysis.
Synthesis in Reviews in endocrine & metabolic disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Levothyroxine therapy for euthyroidism restoration results in clinically insignificant weight and anthropometric changes: a systematic review and meta-analysis.International journal of obesity (2005) · 2026Pooled it
- Assessment of the Musculoskeletal Axis and Body Composition Parameters in Women with Controlled Thyroid Dysfunction: A Cross-Sectional Study.Metabolites · 2026Article
- Functional Medicine Approach to Autoimmune Hypothyroidism: A Case Report.Integrative medicine (Encinitas, Calif.) · 2026Article
- Waist circumference versus BMI: A cross-sectional study comparing Cardiometabolic Risk association in the Nepalese Population.PloS one · 2026Article
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
This systematic review and meta-analysis aimed to investigate the impact of clinical hypothyroidism (CH) and subclinical hypothyroidism (SCH) on anthropometric parameters, such as body mass index (BMI), body weight (BW), waist circumference (WC), Hip Circumference (HC), Waist Circumference (WC) and Waist-Hip ratio (W/H). Databases including PubMed, Web of Science, Scopus, and EMBASE were searched for observational studies on hypothyroidism and body composition. The review included 38 studies (54 comparison groups, 49,427 individuals). Effect sizes (ES) with 95% confidence intervals (CI) were used to measure the effects of CH and SCH on body composition compared to healthy controls and between themselves. Effect sizes were defined as negligible (< 0.2), small (0.20-0.49), moderate (0.50-0.79), and large (> 0.8). CH showed large increases in BMI (ES = 1.092; CI: 0.755, 1.429) and BW (ES = 0.897; CI: 0.404, 1.389), and moderate increases in WC (ES = 0.759; CI: 0.419, 1.099) and fat mass (ES = 0.609; CI: 0.051, 1.167). SCH showed moderate increases in BMI (ES = 0.596; CI: 0.403, 0.789) and BW (ES = 0.712; CI: 0.287, 1.138), a small increase in WC (ES = 0.298; CI: 0.141, 0.454), with negligible fat mass changes (ES=-0.055; CI: - 0.760, 0.649). Analysis of SCH by thyroid-stimulating hormone (TSH) levels revealed greater impacts on body composition with increasing TSH. In turn, BMI (ES=-0.082; CI: - 0.577, 0.413) and BW (ES = 0.054; CI: - 0.441, 0.550) showed no significant changes at near-normal TSH (4.0-4.9 mIU/L). Moderate TSH elevation (5.0-10.0 mIU/L) led to moderate increases in BMI (ES = 0.584; CI: 0.343, 0.825) and BW (ES = 0.659; CI: 0.245, 1.073), with a small WC increase (ES = 0.271; CI: 0.077,0.465). TSH > 10.0 mIU/L resulted in large increases in BMI (ES = 1.426; CI: 0.614, 2.238) and BW (ES = 1.942; CI: 1.550, 2.334), along with a small WC increase (ES = 0.271; CI: 0.077, 0.465). The comparison regarding BMI, WC and BW showed no differences between CH and SCH. Both CH and SCH are associated with changes in body composition, mainly BMI, WC, and BW, which may contribute to metabolic risk. Body composition worsens in SCH as TSH levels rise, and stronger effects are evidenced in females and symptomatic individuals.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.