I agree that current research indicates grain free dog foods have problems, but as my mother always said "never say never". In our case one of our labs had a diagnosed allergy to corn and other grains. Our choice was to let her vomit every day and live a miserable life with an inflamed digestive tract or feed her grain free foods and hope that the side affects were less problematic than the allergies. I should have known better than convert to PPP as one of the main ingredients in their "sensitive skin and stomach" formula is oats, which one would think wouldn't be a problem, but apparently is to our allergic girl. She reacted almost immediately and went right back to vomiting daily, where she hadn't had a problem for over 4 years on the grain free diet. We can only hope for the best regarding possible side effects.