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Year : 2013  |  Volume : 2  |  Issue : 4  |  Page : 239-244

"Iodized salt, a boon or bane?": A retrospective study

1 Department of Medicine, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India
2 Department of Community Medicine, Government Siddhartha Medical College, Vijayawada, Andhra Pradesh, India

Correspondence Address:
Seshaiah Venkata Kurada
Department of Medicine, Government Siddhartha Medical College, Vijayawada - 520 008, Andhra Pradesh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2277-8632.122157

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Background: Iodine is an essential micronutrient. Its daily requirement for adults is placed at 150 μg/day. This amount is normally supplied by well-balanced diets and drinking water, except in areas where food and water are deficient in iodine. Iodine is essential for production of thyroid hormones, which are essential for normal growth and development and for regulation of a number of homeostatic functions. Inadvertent use of iodized salt can lead to hypothyroidism. Aim: To study the association of hypothyroidism a) with excess iodized salt usage; and b) with hypertension and diabetes. Settings and Design: Multispecialty hospital located in municipal corporation of Vijayawada, Andhra Pradesh. The subjects included in this study were selected from outpatient section, using random sampling technique. Materials and Methods: This cross-sectional study was conducted from November 2011 to August 2012, for a period of 10 months and included 120 subjects with hypothyroidism and 339 non-hypothyroid subjects. Statistical Analysis: All statistical analyses were performed using MS Excel 2007 software and appropriate tests of statistical significance including chi-square test, P-values, odds ratios (ORs), and confidence intervals (CIs) were applied. Results: There was statistically significant association of hypothyroidism with excess usage of iodized salt, with hypertension and diabetes. Conclusion: Excess iodine, through global iodization of table salt can lead to hypothyroidism, which is more associated with hypertension and diabetes, the two most important diseases commonly encountered in the community. So, iodine supplementation should be restricted to pockets of iodine deficiency only.

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