Resumo

MUNECAS, Pablo; MALARET, María Laura  e  GALDI, Mónica. Iodine and salt urinary excretion in Buenos Aires population, Argentina . Acta bioquím. clín. latinoam. [online]. 2017, vol.51, n.4, pp.609-613. ISSN 0325-2957.

Iodine is an essential micro-nutrient in the diet. Its deficiency is associated with goiter and cognitive impairment, among other manifestations. Since 1967, salt has been enriched in 33 μg of iodine/g of salt. Recently, under the proposed “Less salt, more life” regulations tend to reduce the daily salt intake from the usual 10-12 g to 5 g. The aim of this study was to determine if salt, and therefore iodine intakes have declined and whether they are related or not. Recent iodine and salt intakes were assessed through urinary excretion (Sandel-Kolthoff reaction and Mohr method respectively), in 514 urine samples, grouped by sex and age range (<20 years, 20-30 years, 30-60 years y >60 years). The criteria recommended by WHO were used to analyze the results. Medium excretion of iodine for adults was 83 ug/L and 18% of the samples presented urinary iodine concentrations lower than 50 μg/L, indicative of poor iodine intake. A very low percentage of samples (3%) showed excessive urinary iodine values. Medium urinary salt values in adults were 5.0 g/L. The global correlation between both parameters, resulted 0.76, but better correlation was found for some age groups (up to 0.91).

Palavras-chave : Iodine deficiency; Hypothyroidism; Salt ingestion; Hypertension.

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