nirvana is samsara
Humans evolved to be omnivores, which we can tell from our gut and our dentition. What we should be eating is FOOD, yes, mostly plants, plus proteins, mostly fish, but a little other dense protein is okay. Along with moderate dairy (milk, cheeses and eggs and the like). Choose natural foods, rather than processed, choose whole grains, rather refined, and choose oils like EVOO. And don't overeat!
That's a healthy diet. It's also, basically, a "mediterranean" diet.
Have humans evolved to drink the milk of other species? Do any other species do that?
Why do humans continue to drink milk into adulthood, what has happened to weaning?