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The relationship between iron status and thyroid hormones in adolescents living in an iodine deficient area
(Walter De Gruyter Gmbh, 2004) Yavuz, Özlem; Yavuz, Taner; Kahraman, Cemil; Yeşildal, Nuray; Bundak, Ruveyda
Background. Iron may be only one of many nutritional factors that influence thyroid hormone metabolism in iodine-deficient areas. Objective: To evaluate the effect of iron status on thyroid hormone profile in adolescents living in a mild iodine-deficient area in Turkey. Subjects: Three hundred and thirty school-aged children with mean age 14 years were examined. Methods: Free triiodothyronine, free tetraiodothyronine and thyrotropin levels were analyzed by chemiluminescent enzyme immunoassay. Hemoglobin and mean corpuscular volume were measured with a Hemocounter. Iron and total iron binding capacity concentration were determined by colorimetric photometric methods. Ferritin level was determined by immunoturbidimetry. Results: Thyroid hormone levels of the children with anemia were not significantly different compared to children without anemia. No significant correlation was found between thyroid hormones and iron status. Conclusion: The thyroid hormone profile was not significantly affected in this area. This survey showed no correlation between iron status and thyroid hormone levels.