&gt;&quot;Arbitrary and wacky dietary restriction slightly less wacky&quot;<p>the kernel of those dietary restrictions naturally evolved in a desert climate with no refrigerators available (i.e basic difference between food (and combinations of) which naturally dries out vs. one which naturally rot&#x2F;perish. Like beef vs. pork or cod vs. sturgeon. Or imagine rich bacteria population of unpasteurized dairy coming into contact with fresh meat on a hot day...). Those people who didn&#x27;t follow the restrictions had naturally selected themselves out back then.