I have doubts about the sustainability of the vegan life - it's one thing to become a vegan after a childhood of being an omnivore, but another for a vegan to produce children, raise them on a vegan diet, and have them healthy enough to reproduce.
Can anyone name a long-lasting vegan civilization or group?
By long-lasting, I mean at least 5 generations of nothing but vegans. Groups that accept members from the non-vegan population don't count ... they are importing omnivores to maintain reproductive health.
India doesn't count - they use milk and eggs.
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