OB/GYN & Women’s HealthlevothyroxinePregnancy
Levothyroxine in Pregnancy for Subclinical Hypothyroidism or Hypothyroxinemia: No Benefit on Child IQ
By MedXY|Jul 28, 2026
A randomized trial found that levothyroxine treatment for subclinical hypothyroidism or hypothyroxinemia starting between 8 and 20 weeks of gestation did not improve IQ scores in children at age 5 years compared with placebo.