It is not useful to question the motives of the scientists or their sponsors. Just be happy the studies are being done. Plus, keep in mind, whenever someone does a study, the first thing they need to do is to make a statement of what they are hoping to prove. It is NOT like, "Gee, I'll try this on a bunch of dogs and hope something comes up." A lot of studies are done hoping to prove something, only to learn the opposite of what they expected.
and the researchers/authors of any study report in the research publications the possible limitations of the study and all possible funding conflicts. Are any studies perfect? No, but they can still provide valuable information.
