When enzyme-deficient food is eaten, the pancreas must then produce enzymes to compensate. I can advise you on proper supplements. A healthy cat receiving all nutrients it needs will eat to fill its needs, and then will eat no more. If your cat is too thin or overweight, do not be too quick to switch to a special diet which supposedly will correct the weight Many of these diets are simply high-fiber, which can decrease the absorption of essential nutrients even further. Go through the steps above and make sure the diet is as close to the natural diet as possible.
Some people choose to prepare their cat's food at home, avoiding commercial foods entirely.
This is wonderful, but does require some knowledge as to mineral supplementation. Remember that eaten prey consists not only of raw meat, but the minerals from the bones as well I can also advise you on this route and suggest appropriate books and other reading materials. It cannot resist disease or parasites and becomes progressively weakened. Drugs are powerless when you do not get at the source, just as it is no use spraying your plants time after time but neglecting to enrich the soil.