Iodizing salt to prevent goiter became standard public health practice, thanks to the research of Western Reserve University School of Medicine Professor David Marine. In 1920, the final results of his 1917 collaboration with student O.P. Kimball confirmed the efficacy of sodium iodine in the prevention of thyroid issues. The researchers established a goiter prevention program and observed its effects on 4,500 Akron, Ohio, girls.
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