http://catkinsdiet.com/diabetic-cat-diet.html
Your cat should be eating what it naturally eats in the wild, but since you can't go into the wild and feed your cat mice and birds, the next step would be to give your cat the proper canned foods to eat.
Everyday cats from all around the world are developing disease such as feline diabetes. Domesticated cats are not eating what nature intended. Most of the time pet owners place dry cat food down in the morning and leave it alone for the cat to leisurely eat during the course of the day. When a cat just eats and eats while their owners are off at work, they get bigger and bigger and eventually their internal organs start to get sick and they develop feline disease such as cat diabetes. If you leave dry cat food out for your cat, then it is like leaving the medicine cabinet open for your child.
You should take a good look at the ingredient label on your cat dry food box. If it has fiber and starch then there is a greater chance of future health problems for your cat. That is why an all natural diet, the Catkin's Diet is the ideal diet.
Starch and fiber in diets stimulate the formation of struvite crystals. Hence, reducing dietary carbohydrate is desirable to prevent struvite urolith formation. In addition, a net loss of body calcium, phosphorus, and magnesium during feeding of the fiber diet suggests that dietary inclusion of insoluble fiber could increase macromineral requirements of cats.
It has been known that a net loss of body calcium, phosphorus, and magnesium was detected in diets that are high in fiber and starch.
Stay away from Dry Food please!
WHAT'S IN THE CATKIN'S DIET
The Catkin's Diet does not have anything to do with Dry Food. The Catkin's Diet is a diet consisting of High Protein and Low Carbohydrates that you can find in canned cat food. The idea diet for cats, which are carnivores is a diet that they would get in the wild, like mice and birds. But, since your cat is most likely an indoor cat then either you make a raw food meal for your cat and add the necessary vitamins and nutrients, or stick with canned cat food.
The ideal canned cat food should have less then 10 percent carbohydrates. A lot of canned cat food has greater then 10 percent carbs, but there are many that will be good for you to purchase.
Commercial dry food is bad for your diabetic cat, and normal cat. Dry cat food contains 30 to 70 percent carbohydrates. When the manufacturer creates dry cat food, it ads form and structure to the food.
There are more and more studies coming out that say that a diet that has low carbohydrate and high protein diets create a better chance for your diabetic cat to go into remission.
When switching to a low Carbohydrate diet you should take it slow and as you do so make sure to check your cat's glucose levels and insulin when needed. You will most likely have to regulate the amounts of insulin as the Catkin's Diet starts to work.
A sudden switch to low carbohydrate high protein diet could induce hypoglycemia. If your cat encounters any of the symptoms of hypoglycemia then take him to the veterinarian immediately.