Как раз и новый трайл в НЕЙМе по теме подоспел:

Treatment for subclinical hypothyroidism defined as a thyrotropin level of 4.00 mU or more per liter and a normal free thyroxine (T4) level (0.86 to 1.90 ng per deciliter [11 to 24 pmol per liter]), and for hypothyroxinemia, defined as a normal thyrotropin level (0.08 to 3.99 mU per liter) and a low free T4 level (<0.86 ng per deciliter) beginning between 8 and 20 weeks of gestation did not result in significantly better cognitive outcomes in children through 5 years of age than no treatment for those conditions. There were no significant between-group differences in either trial in any other neurocognitive or pregnancy outcomes or in the incidence of adverse events, which was low in both groups.

Treatment of Subclinical Hypothyroidism or Hypothyroxinemia in Pregnancy
N Engl J Med 2017; 376:815-825. March 2, 2017
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