Hi Dominick,
There are pros and cons to every ingredient. I see the “grain free” ideology as more of a personal preference than anything based in science as to any real “across the board” benefit.
Certainly there will be a few individuals who develop an adverse food reaction to grain just as they some have reactions to beef or chicken or whatever.
Here are two informative posts by a holistic vet who accurately discusses the use of grains in pet food.
http://vetnutrition.blogspot.com/2009/05/are-grains-all-bad.html
http://vetnutrition.blogspot.com/2010/03/grains-2-not-as-allergenic-as-you.html
