Ok I know this is another feeding question and there are a ton of them on this board but I am really getting confused. My Maggie will be switching to adult food soon and I have been researching the benefits of a grain free diet. There is not that much information out there to support it and what I did find was really interesting. One study I found was not in favor of a grain free diet due to the fact that grains such as rice, oats, and barley when digested turn into tryptophine which in turn produces seritonin in the body and helps regulate hormone levels. It "says" that dogs on grain free diets have more hormonal problems which can create hyperactivity, depression, agression, ect due to decreased seritonin levels. I guess my question is for those out there on the grain free diet, do you have any of those issues with your dogs? I just don't know if I want to switch my Maggie to grain free or not. She is on Wellness Just for Puppy and loves it. Any comments would be greatly appreciated.