The Indian Journal of Pediatrics

, Volume 86, Issue 3, pp 256–262 | Cite as

Iodized Salt Consumption and its Association with Intelligence Quotient (IQ) Among 6–12 years Age Group Children in Bihar

  • Kislay Parag
  • Dhananjay KumarEmail author
  • Rajesh Ranjan Sinha
  • Ajay Krishna
  • Rashmi Singh
Original Article



To estimate the proportion of households using adequately iodized salt, total goitre rate and intelligence quotient (IQ) and to assess association, if any, between consumption of iodized salt and intelligence quotient of children aged 6–12 y in the selected districts of Bihar.


Community based cross-sectional study was conducted in three districts of Bihar by using cluster sampling technique.


Consumption of iodized salt was 73.5% out of 1263 households surveyed and the prevalence of goitre among children was 2.9%. The mean IQ of study population was 82.6 and it was 9 points lower in children consuming inadequately iodized salt in comparison to children consuming adequately iodized salt. Presence of goitre, inadequately iodized salt consumption and increasing age were the factors which were significant predictors of low IQ level.


The prevalence of goitre has declined from the past but the target of iodized salt consumption has not yet achieved in these districts. This study reinforces the belief that IQ in children is linked to iodine.


Iodized salt consumption Total goitre rate Intelligence quotient (IQ) Bihar 



The authors are thankful to State Health Society, Bihar for providing logistic supports for this survey under NIDDCP. They are also thankful to study participants for their cooperation.


All the authors were involved in study design, carrying out the study, literature search, drafting of the manuscript and critically reviewing it for intellectual content. All the authors have seen and approved the final draft.

Source of Funding

This study was supported by State Health Society, Bihar.

Compliance with Ethical Standards

Conflict of Interest



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Copyright information

© Dr. K C Chaudhuri Foundation 2018

Authors and Affiliations

  • Kislay Parag
    • 1
  • Dhananjay Kumar
    • 1
    Email author
  • Rajesh Ranjan Sinha
    • 1
  • Ajay Krishna
    • 1
  • Rashmi Singh
    • 1
  1. 1.Department of Community MedicinePatna Medical CollegePatnaIndia

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