Testing ruled out their first suspicion. But further tests pinpointed what they — and the boy — had been missing: iodine. A ...

By the 1950s, more than 70% of U.S. households used iodized table ... "People have forgotten why there's iodine in salt," said Dr. Elizabeth Pearce of Boston Medical Center. She is a leader ...

By the 1950s, more than 70% of U.S. households used iodized table ... “People have forgotten why there’s iodine in salt,” said Dr. Elizabeth Pearce of Boston Medical Center.

By the 1950s, more than 70% of U.S. households used iodized table ... “People have forgotten why there’s iodine in salt,” said Dr. Elizabeth Pearce of Boston Medical Center.