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Mom's Thyroid Rx Has No Effect on Kid's IQ

MedPage Today,  Feb 8, 2012

Screening pregnant women for low thyroid hormone levels in the first trimester — and treating accordingly — does not impact a child's IQ at age 3, a randomized trial showed. The average IQ was 99.2 among children whose mothers were treated for low thyroid hormone levels and 100.0 for those whose mothers were not treated (P=0.40), according to John Lazarus, MD, of Cardiff University in Wales, and colleagues.

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