Is that a thing? Humans metabolizing Saturated Fats badly? I mean, I know of gall-bladder deterioration after maybe years of very-low-fat eating, but other than that. Would these people also weirdly burn their own body fat (saturated) "badly"? ;)
http://eatingacademy.com/cholesterol-2/random-finding-plus-p...
I think that's essentially what a diagnosis of familial hypercholesterolemia means.
Likewise people seem to vary widely in their ability to handle high carb diets. I guess a cookie cutter approach doesn't really work across the board.
High carb diets of course that's common. But saturated fat, you know, it's simply what fueled the ice ages!
[1]https://www.sciencebasedmedicine.org/death-as-a-foodborne-il...