An estimated 30 percent of the world’s school-age children -- about 240 million -- consume too little iodized salt, which adversely affects their growth and development. Women of reproductive age and pregnant women are also at high risk. Read related article.


Note: Insufficient iodine defined as less than 100 micrograms/liter in urinary iodine concentration. School age is 6-12 years old; population totals based on May 2011 United Nations estimates. | Sources: The Journal of Nutrition; World Health Organization | |The Washington Post December 30, 2012
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