&gt; Given how little we know about digestion and the interaction between us and our gut flora I&#x27;d rather not limit the variety of my food based on the latest fad.<p>Some folks are saying that what we eat these days in western countries is indeed &quot;the latest fad&quot; - compared to at least what mankind ate 100&#x27;000-20&#x27;000 years ago. So, don&#x27;t eat the latest fad - go back what your genome is used to. High protein?