Lots of people think it’s obvious: vegetarians are healthier than omnivores in Study X. Therefore vegetarianism is healthy. This is such a common line of argument that I draw your attention to Denise Minger’s slides for her talk at the Ancestral Health Symposium, which I have already blogged about. The slides make clearer than I did what she said. It’s all excellent but the best part is at the beginning where she points out the many confounds in the studies of Dean Ornish, Neal Barnard, Caldwell Esselstyn, and John McDougall. They change many things but — as Denise put it — What caused the benefits? It must be the vegetarianism! Paleo humor.
There are lots of other interesting things in Denise’s talk, as you will see, such as the health of religious vegetarians.