How to treat an underactive thyroid gland?

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London Endocrinology

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What does the thyroid do?

Dr Simon Aylwin of London Endocrinology briefly explains what a thyroid gland is, how it’s composed and that it makes thyroxine (T4) and liothyronine (T3).

Transcript
It's a single...there's one and it's got two lobes and a bit in the middle. And the thyroid gland makes thyroxine as the main product which is T4. And it makes T3 or liothyronine which is a...the more active form.

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