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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The auditory threshold in a school-age population is related to iodine intake and thyroid function.

The aim of this study was to determine the relationship between auditory capacity and urinary iodine, taking into account thyroid volume and function, in a population of school-age children. Audiometry was carried out in 150 children (ages 6-14 years), together with measurements of thyroid volume, thyrotropin (TSH), free T3, free T4, thyroglobulin, antiperoxidase and anti-TSH receptor antibodies, as well as iodine in a casual urine sample. Children with a TSH >5 microU/mL were excluded from the study. In the children with palpable goiter, there was an inverse relation between the auditory threshold at all frequencies and ioduria. Children with thyroglobulin values >10 ng/mL had a higher auditory threshold at all frequencies. In the children with palpable goiter and ioduria <100 microg/L, the levels of thyroglobulin and ioduria and the age accounted for 75% of the decibel (dB) variance at 2000 (Hertz), with similar results at other frequencies. The children with a thyroid sized at the >95th percentile had an odds ratio of 3.86 (95% confidence interval: 2.59-5.10) of having a threshold >20 dB. The results warn that iodine prophylaxis is needed to prevent not only goiter but also other iodine-deficiency disorders, such as involvement of the auditory threshold in school-age children.[1]


  1. The auditory threshold in a school-age population is related to iodine intake and thyroid function. Soriguer, F., Millón, M.C., Muñoz, R., Mancha, I., López Siguero, J.P., Martinez Aedo, M.J., Gómez-Huelga, R., Garriga, M.J., Rojo-Martinez, G., Esteva, I., Tinahones, F.J. Thyroid (2000) [Pubmed]
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