Tell us about the symptoms. How long has the cat been experiencing the issue? When you took the cat to a veterinarian, what diagnosis and treatment did they offer?
What brand of food does the cat eat? Is it wet, dry or both? Does the cat prefer the food room temperature or cold? How much and how often are they fed? Is the cat free-fed or is the cat fed once or twice a day? Where in the house are they fed? If the cat lives in a home with other cats or dogs, where/how is the cat fed in relation to the other animals?