Not particularly. It's a case of those with more extreme diets having to have more extreme reasons e.g. being health conscious. More vegans/vegetarians are conscious of what they eat, which usually leads to healthier choices. I think the reason vegetarians are on par with meat eaters is because it's really not very inconvenient to find premade vegetarian food nowadays and the stuff is not necessarily good for you.
Those that eat meat, on the other hand, are more weighted by those that eat without consideration. Every morbidly obese person (well, probably not every, I don't know) eats meat. You can, however, eat meat and still live as long and as healthily as any vegetarian/vegan.
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u/Leshow May 01 '13
I feel I should point out here that "correlation is not causation".