Corn syrup in human food = diabetes; corn meal in pet food = diabetes. Simple as that.
Very succinct, erudite, pithy, accurate, and quite easy to remember.
Beats the heck out of taking years to commit to memory big old nasty texts about metabolism, endocrinology, nutrition, physiology, and lesser related tomes.
Those dang RD's* need to spend more time on the net.
*RD=real doctors