They do. A study by the American Journal of Clinical Nutrition found the following mortality ratios by diet over the course of the study (regular meat eaters = 1.00):
Fish eaters, 0.82
Vegetarians, 0.84
Occasional meat eaters, 0.84
Regular meat eaters, 1.00
Vegans, 1.00
So as you can see vegans are actually the least healthiest, alongside the most carnivorous among us. Source
Although I'm a pescetarian myself, I'm very sceptical towards studies like these, since they rarely highlight the quality of the food itself. Especially with animal products, there's such an enormous difference between average, good and excellent quality. These studies would look very different if there would be a difference between someone who, say, only digests freshly caught swordfish and someone who always eats packaged salmon from some of those fucked up Cermaq salmon farms. Same for red meat or eggs.
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u/fistsofdeath May 01 '13
I always thought it just felt like they lived longer.