I switched my cat to this food because he kept getting sick with his old food. He doesn't throw up anymore, and it's a lot less clean up. However, I think my cat is tired of chicken. When he was getting sick, we tried so many different foods and he just doesn't like chicken (even wet food, wouldn't touch it). We had cut him back a 1/5 of a cup because the vet told us to (and he's fat), but since he switched to Iams, and he's leaving behind even more food; he's lost so much weight! It might be because the food is nutrient heavy, but I wish I could try a different flavor to see for sure.