This is not a very long time in evolution. We may have "adapted" to deal with more animal products (meat/dairy/eggs): those that did not take this food very wel

This is not a very long time in evolution. We may have "adapted" to deal with more animal products (meat/dairy/eggs): those that did not take this food very well have had less offspring and now we're generally more adapted to it (though lactose intolerance is still huge in humans). But evolving to thrive on diet that's so far off what we started with will take much longer.