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PICO question

In cats with hyperthyroidism, does an iodine-restricted diet normalise the serum TT4 (total thyroxine) levels and reduce the severity of the clinical signs when compared to cats on a normal diet?

Clinical bottom line

Whilst there is some evidence that iodine-restricted diets can help to renormalise serum TT4 in cats with hyperthyroidism, this is not always effective and there is a lack of compelling evidence to suggest this is associated with a resolution of clinical signs in the long-term.

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