Evolutionarily, human diets contained a small amount of polyunsaturated fatty acids (PUFAs), estimated at 0.5% to 2% of total fat intake from wild animals.

“evolutionarily if you look at wild animals their fat is composed of a small amount of polyunsaturated fatty acids so eating wild animals we would have only gotten 0.5 to 1 or maybe 2 percent max polyunsaturated fatty acids in our diet”