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Controlled Level of Dietary Iodine Normalizes Serum Total Thyroxine in Cats with Naturally Occuring Hyperthyroidism

Shiguang Y., Wedekind K.J., Burris P.A., et al.

Conference Proceedings, (2011). American College of Veterinary Internal Medicine, Denver:

Hyperthyroidism is a common disease in old cats. Excessive production of thyroid hormones is the hallmark of the disease. Three main treatments for feline hyperthyroidism include radioactive iodine, thyroidectomy, and antithyroid drugs such as methimazole. Previously we have shown that limiting dietary iodine to or below 0.27 ppm induces euthyroidism in cats with hyperthyroidism compared with a similar diet containing 0.42 ppm iodine. The objective of this study was to test whether dietary iodine at 0.32 ppm would induce euthyroidism in cats with naturally occurring hyperthyroidism.