. . but is it meaningful?
Large populations subsist mainly on white rice. Are they overweight and diabetic? If not the science is little more than a curiosity.
The same with potatoes. Are Peruvians who subsist mainly on potatoes overweight and diabetic?
I think, right now, with "science" slowly losing saturated fats as the "great evil", potatoes have been appointed to that role. Ya gotta have the boogeyman to explain away your failures.