Fetal brains at risk


The first 1000 days are the most important for brain development in the fetus and newborn. And adequate iodine intake and thyroid function are vital to this process.

So says Professor Creswell Eastman, clinical professor of medicine at the University of Sydney and renowned expert on the role of iodine in human health on a recent Healthed podcast.

Fundamentally the thyroid needs enough iodine to function properly – to produce sufficient thyroid hormone.

A fetus requires thyroid hormone for brain development and relies solely on the mother’s thyroid hormone supply for at least the first half of the pregnancy. The fetal thyroid doesn’t develop until well into the second trimester and even then is not capable of producing ...

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