Hello,

We have a 10-year-old, overweight, female, domestic shorthair that has
developed excessive thirst and urination.  She had been on diet food
(Hills Feline R/D) and was not making any progress on reducing her
weight.  Since this diet was not helping, and there seems to be
growing evidence that modern grain-based diets for cats are less than
ideal, we decided to try a more protein-based diet and just reduced
the amount.  Currently we are feeding the Wysong canned meats and
Wysong Vitality dry food.  She has achieved some weight loss.  She
dropped from 17.5 to 16.5 over a period of 34 days.  But now with the
excessive thirst and urination, we can't help but wonder if the weight
loss is associated with some other condition such as diabetes, chronic
renal failure, or hyperthyroidism.  She has no other symptoms that are
associated with those conditions.  She's always had a big appetite,
and that has not changed.  Her activity level is normal.  I know we
need to get her checked out and that there's several blood tests that
can help determine if she has renal or endocrine problems.  But I also
wonder if the excessive thirst/urination could be associated with the
diet changes.

--Dave