A 39-year-old member asked:
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how can nursing an infant be impacted by hyperthyroidism or hypothyroidism?

1 doctor answer
Dr. Susan Wingo
32 years experience Endocrinology
Hard to predict: The effect of hyper- or hypothyroidism on the baby should be minor as her thyroid will adjust how much it makes to keep him normal. However, the abnormal thyroid hormone levels, or the antibodies that cause them, could cause the mother to make less milk. If the baby becomes fretful quickly after starting to nurse, and mom can't easily express milk, the baby may need supplemental formula.
Answered on May 17, 2015

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