correlation is not causation. (Western) vegetarianism itself is highly correlated with factors that reduce mortality, most notably high income.
to go vegan and not become entirely unhealthy requires you to pay an extraordinary amount of attention to what you eat. and they all eat lots of foods that even meat-atarians and the rest of us omnivores should be getting more of.
to go vegan and not become entirely unhealthy requires you to pay an extraordinary amount of attention to what you eat. and they all eat lots of foods that even meat-atarians and the rest of us omnivores should be getting more of.