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Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Abstract

MENDEZ-VILLA, Lorena et al. Iodine nutrition and thyroid function assessment in childbearing age women from Queretaro, Mexico. Nutr. Hosp. [online]. 2014, vol.29, n.1, pp.204-211. ISSN 1699-5198.  https://dx.doi.org/10.3305/nh.2014.29.1.6996.

Objective: To assess iodine nutrition and thyroid function in Mexican childbearing age women. Methods: 101 childbearing age women (21.7 ± 3.5 years) randomly selected from the university student population participated in this cross-sectional study. TSH, thyroid hormones, anti-thyroid antibodies, thyroid volume, iodine intake, and urinary iodine concentration (UIC) were assessed. The knowledge about the importance of iodine in nutrition was also evaluated by using questionnaires. Results: TSH median (interquartile range) value was 1.9 (1.4-2.5) mlU/L, while FT4 median value was 9.0 (8.39.6) μμg/dL. The median FT3 and total rT3 values were 3.3 pg/mL and 40.1 μg/dL, respectively. The prevalence of subclinical hypothyroidism (serum TSH >4.5 mlU/L) and of positive anti-thyroid antibodies were 2.9% and <5.9%, respectively. Median thyroid volume was 5.6 mL and none of the subjects were diagnosed with goiter. Median urinary iodine concentration was 146 (104-180) μg/L. As for the knowledge of iodine nutrition, only 37.6% considered that a pregnant woman needs more dietary iodine than a non pregnant woman, while 43.6% recognized that the lack of iodine can cause mental retardation in children. Conclusions: Prevalence of thyroid test function abnormalities was low in this population and the median UIC indicates adequate iodine intake. We also found a poor knowledge about the importance iodine nutrition in the studied population.

Keywords : Iodine nutrition; Thyroid hormones; Childbearing age women; Urinary iodine concentration.

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