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BACKGROUND: It has been shown that there is a link between thyroid-related diseases and hearing loss. OBJECTIVES: The purpose of this study is to investigate the relationship between thyroid-related diseases and hearing loss by conducting a meta-analysis. MATERIAL AND METHODS: A thorough search was carried out in the following electronic databases: PubMed, Cochrane Library, Embase, Web of Science, Google Scholar, Semantic Scholar, and ResearchRabbit. The chi-square test and the I2 index examined the research's heterogeneity. A funnel plot and the Eger test were used to examine publication-biased effects. RESULTS: A total of 48,507 individuals (6482 hypothyroid patients, 4162 hearing loss patients, and 37863 controls) were included in this meta-analysis of 18 research. Individuals with hypothyroidism had a 1.69-fold increased risk of hearing loss compared to those without the condition (OR: 1.69; 95% CI: 1.11-2.57, p < 0.001). among hypothyroidism, the prevalence of hearing loss was 24% (EC: 0.24; 95% CI: 0.11-0.39, p = 0.00), while among hearing-impaired individuals, the prevalence of hypothyroidism was 7% (EC: 0.21; 95% CI: 0.07-0.40). CONCLUSION: This study demonstrated how thyroid dysfunction can raise the chance of hearing loss. To completely comprehend the underlying mechanisms and create efficient treatments for this illness, more study is required.