How the U.S. accidentally raised the IQ of a generation @Grist
How the U.S. accidentally raised the IQ of a generation @Grist
Uploaded November 2019 | Updated September 2026, 59 minutes ago
Nearly a hundred years ago, the United States solved a major public health crisis, goiter, by iodizing salt. Surprisingly, it also led to a 15-point jump in IQ. What can this tell us today about how we should respond to toxic substances like lead?
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How the U.S. accidentally raised the IQ of a generation

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