My vet has suspected that Lucy, one of my cats, may have hyperthyroidism. She also has pancreatitis and a heart murmur. As far as we know, her age is nearly 10 years old. At the moment, I am saving to have the appropriate blood tests done (I am in a debt management scheme but make sure that my cats get the best foods, rather than me spending a lot on my own food - before anyone says that I shouldn't have cats, this is a fairly recent situation. When I got my cats, years ago, I was pretty well off.) Lucy has all the signs of hyperthyroidism - huge appetite, losing weight, over-active etc, and I have been looking at the alternative treatments. There seems to be a problem with all of them. 1) Radioactive iodine - this seems to be hugely expensive and the cat has to stay either at the vet's or stay well away from other animals and humans until all the radioactivity has cleared. 2) Surgery - not recommended for older cats, and some parts of the thyroid may be left behind. Also very expensive. 3) A diet purely of Hills very low iodine food and absolutely NOTHING else. Difficult to monitor as I have two other cats, and also she absolutely HATES any of the 'prescription' foods that I have tried her on. She may eat a bit of one tin but I guarantee that she will be clamouring for her favourite normal food before the day is out. MAKING her eat it is cruel, and she just won't, and she will lose even MORE weight and end up with liver disease. 4. A daily dose of Methimazole - I am on my own and have no-one to help locally to help administer. Lucy is very clever at spitting out/leaving tablets, even if crumbled. There is a liquid version but this will end up being hugely expensive over time and I literally will not have enough money to buy it unless I stop eating altogether. Also it has quite serious side effects - bear in mind that she has pancreatitis and a heart murmur as well. I am not sure if my pet insurance will cover any of these treatments as the insurance company may think that it is linked to her pancreatitis (I gather that hyperthyroidism can cause pancreatitis and they will no doubt find any excuse not to pay up) as they will NOT cover anything to do with pancreatitis (even though it's the result and not the cause of her hyperthyroidism).