Originally Posted by Tester
Humans also have much longer intestinal tract then predators, thats making us more similar to herbivorous animals. In fact humans are omnivore. Hovewer, I've read that some important proteins can be found only in meat, they can't be replaced by proteins, for instance, in beans or nuts.
I've been vegan for eight years and researching it for ten. In none of my research, including my education in medical school, have I come across this idea. I can say with confidence that there is literally nothing that one cannot get from a plant, bacterial or fungal source that is required for normal health.
I'd be interesting to see any credible studies that say something different.