It suggests a protective effect of being healthier in general. Japan/Korea/Taiwan/elsewhere have lower rates of metabolic syndrome than the U.S. not because the

It suggests a protective effect of being healthier in general. Japan/Korea/Taiwan/elsewhere have lower rates of metabolic syndrome than the U.S. not because they're on a keto/paleo diet... (Nothing against a keto/paleo diet, just it's not really necessary.)