Iodine intake in the adult population. [e-mail] study

• Published in: Clinical nutrition (Edinburgh, Scotland) Scotland), 2012-12, Vol.31 (6), p.882-888
• Main Authors: Soriguer, F, García-Fuentes, E, Gutierrez-Repiso, C, Rojo-Martínez, G, Velasco, I, Goday, A, Bosch-Comas, A, Bordiú, E, Calle, A, Carmena, R, Casamitjana, R, Castaño, L, Castell, C, Catalá, M, Delgado, E, Franch, J, Gaztambide, S, Girbés, J, Gomis, R, Gutiérrez, G, López-Alba, A, Martínez-Larrad, M.T, Menéndez, E, Mora-Peces, I, Ortega, E, Pascual-Manich, G, Serrano-Rios, M, Valdés, S, Vázquez, J.A, Vendrell, J
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; adults; Aged; Aged, 80 and over; Biological and medical sciences; Cross-Sectional Studies; Feeding. Feeding behavior; Female; Fundamental and applied biological sciences. Psychology; Gastroenterology and Hepatology; Humans; iodine; Iodine - administration & dosage; Iodine - deficiency; Iodine - urine; Iodized salt; Male; Malnutrition - epidemiology; Middle Aged; Milk; national surveys; Nutrition Surveys; Sodium Chloride, Dietary - administration & dosage; Spain - epidemiology; Urinary iodine; Vertebrates: anatomy and physiology, studies on body, several organs or systems; Young Adult
• ISSN: 0261-5614; 1532-1983
• DOI: 10.1016/j.clnu.2012.04.004

Summary Background & aims To date no nation-wide study has yet been undertaken in Spain to estimate the iodine deficiency. The aim was to evaluate iodine intake and its conditioning factors in a representative sample of the whole adult population. Methods The [e-mail] Study is a national, cross-sectional, population-based survey conducted in 2009–2010 in Spain. Results The median urinary iodine (UI) was 117.2 μg/L. Iodized salt (IS) was consumed by 43.9% of the population. The median UI in those who consumed IS and in those who did not consume IS was 131.1 and 110.8 μg/L respectively ( p < 0.0001). The likelihood of having UI levels above 100 μg/L was significantly associated with the intake of IS (OR = 1.47) and milk at least once a day (OR = 1.22). Within each individual autonomous communities, the median UI levels in those who consumed IS correlated significantly with the median levels of those who did not consume IS ( r = 0.76, p = 0.001). Conclusions Though strictly speaking, Spain should be considered within the category of a country having an adequate iodine intake, the current value is too close to the cut point and does not guarantee that those groups with a greater need for iodine will have the required intake of iodine.