[Source:  Science Daily]

Low levels of key, body-regulating chemicals in mothers during the first three months of pregnancy may interfere with the baby’s brain development, a large American study shows.

These chemicals, or hormones, are produced in the thyroid gland in the neck and are known to influence fetal growth. Investigators have suspected that disruptions in their production, or hypothyroidism, may contribute to attention deficit/hyperactivity disorder (ADHD), which is the most common neurodevelopmental disorder of children in the U.S.

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