SynthesisClinical endocrinology2022
Impact of low iodine diets on ablation success in differentiated thyroid cancer: A mixed-methods systematic review and meta-analysis.
Synthesis in Clinical endocrinology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 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.
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Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- Impact of low iodine diets on ablation success in differentiated thyroid cancer: A mixed-methods systematic review and meta-analysis.Clinical endocrinology · 2022Pooled it
- Dynamic Thyroglobulin Ratio as a Biomarker to Identify Papillary Thyroid Cancer Patients Who Would Benefit from a Low-Iodine Diet.Diagnostics (Basel, Switzerland) · 2026Article
- Knowledge, Attitudes, and Practices Regarding Iodine-131 Therapy and Their Association with Depression and Anxiety Among Postoperative Thyroid Cancer Patients Undergoing I-131 Treatment.Patient preference and adherence · 2026Article
- Evolving Paradigm in Radioactive Iodine Therapy for Differentiated Thyroid Cancer: Historical Perspectives, Current Practices and Future Directions.Diagnostics (Basel, Switzerland) · 2025Review
- Radioactive Iodine Therapy in Differentiated Thyroid Cancer: Summary of the Korean Thyroid Association Guidelines 2024 from Nuclear Medicine Perspective, Part-II.Nuclear medicine and molecular imaging · 2025Review
- Investigation on low-iodine diet implementation by medical staff before radioactive iodine treatment for differentiated thyroid carcinoma.Annals of nuclear medicine · 2024Article
- Correlation between thyroid function indices and urine iodine levels in patients with nodular goiter.American journal of translational research · 2023Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundDebate remains regarding whether to recommend a low iodine diet (LID) before radioactive-iodine treatment and its duration and stringency. This mixed-methods review aimed to determine if iodine status affects treatment success, the most effective diet to reduce iodine status, and how LID impacts wellbeing.
methodsFive electronic databases were searched until February 2021. An effectiveness synthesis (quantitative studies) and views synthesis (qualitative, survey, and experience-based evidence) were conducted individually and then integrated. Quality assessment was undertaken.
resultsFifty-six quantitative and three qualitative studies were identified. There was greater ablation success for those with an iodine status of <50 mcg/L (or mcg/gCr) compared with ≥250 (odds ratio [OR] = 2.63, 95% confidence interval [CI], 1.18-5.86, n = 283, GRADE certainty of evidence very low). One study compared <50 mcg/L (or mcg/gCr) to 100-199 and showed similar rates of ablation success (OR = 1.59, 95% CI, 0.48-6.15, n = 113; moderate risk of bias). People following a stricter LID before ablation had similar rates of success to a less-strict diet (OR = 0.67, 95% CI, 0.26-1.73, n = 256, GRADE certainty of evidence very low). A stricter LID reduced iodine status more than a less strict (SMD = -0.40, 95% CI, -0.56 to -0.24, n = 816), and reduction was seen after 1 and 2 weeks. The main challenges were a negative impact on psychological health, over restriction, confusion, and difficulty for sub-groups.
conclusionsAlthough a LID of 1-2 weeks reduces iodine status, it remains unclear whether iodine status affects treatment success as only a few low-quality studies have examined this. LIDs are challenging for patients. Higher-quality studies are needed to confirm whether a LID is necessary.
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Registered trials
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