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Hyperthyroidism in Cats

  BCR recently welcomed a new resident kitty, Gio, who arrived suffering from hyperthyroidism.  She weighed less than five pounds when she arrived because this condition had never been treated.  We're glad that she's here with us and that she's getting the treatment she needs.  Hyperthyroidism is something you need to be aware of and to watch for in your own cats.  Here is some information that will help you do just that. Hyperthyroidism is a common disease usually found in middle-aged and older cats. It's caused by an increase in the production of thyroid hormones (known as T3 and T4) from enlarged thyroid glands and is usually caused by a benign tumor on the thyroid gland called an adenoma. In rare cases, the tumor is a carcinoma, which is cancer.  In the US, 10% of cats over age 10 will develop hyperthyroidism, making it the most common endocrine disease in cats. Why do so many cats develop this condition?  As is true with many diseases, there isn't one cause to

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