Giving more pregnant women common thyroid medicine may reduc
The thyroid gland is an organ found in the base of the neck. It produces essential hormones that control the body's metabolism -- the way we use energy. Thyroid hormones are also critical for fetal brain development, but babies cannot make any of their own until the second trimester and have to source all of it from their mothers.

2-3% of pregnant women have mild hypothyroidism, meaning they have low levels of thyroid hormones. This can be treated with a hormone replacement drug called levothyroxine....
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