Yes, they still don’t understand the linkage between grain free diets and this devastating heart disease, but they know there is a link. Clark’s records are part of the FDA study. We also were interviewed by an FDA vet. The current thinking is the high amount of legumes and pea protein in grain free diets may be the issue. But, believe me, we have learned the lesson the hard way. Stick with a major brand and avoid grain-free. Keep it simple and avoid boutique brands and exotic ingredients. No reputable vet would disagree.