A valid study would contain at least three groups, preferably large groups,with members of each study group with similar if not identical genetic lines to eliminate health problems of genetic origin. One group fed strictly raw, one fed kibble, one fed a mixed diet. The only variable for the study to be valid can be the diet. No environmental variables, all exercised the same, etc.

Until that happens, please leave the pseudo scientific pap out of the discussion, and admit that anecdotal evidence (as in my dog is .........) is just that. Anecdotal evidence.