The ingredients specifically aren’t as important as the calorie content and the quantity of food you’re feeding. That being said, I like fresh food options more, and we know in human medicine, the less preservatives the better.High fiber foods will naturally help more.The big recommendation from me from a food perspective is that, as vets, we are taught to look on the back of any bag of food for the AAFCO [Association of American Feed Control Officials] guarantee. This tells you this particular food is balanced in protein, carbs, fat, minerals and electrolytes.