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.
Keywords: Hashimoto thyroiditis; Hypothyroidism; clinical outcomes; hearing loss; hyperthyroidism; randomized controlled trials.