There is no such thing as a natural diet in the present.
There are no current foods sold in stores that are not the result of genetic manipulation.
Define natural?? I don’t eat processed foods whose ingredient lust I can’t pronounce. The food I eat either came from the ground or had a mother. And the stuff that came from the ground is organic & non-GMO. The meat I buy is grass fed, free range, or wild caught fish. I don’t eat beef that’s been fed corn (GMO) because its high in omega 6, I don’t buy farm-raised fish because its filthy & laden with pharmaceuticals, and I eat free range chicken for the same reason.
In general no paleo foods of any kind are even for sale anywhere.