- Plant-based diets are commonly promoted by doctors like Dean Ornish and Caldwell Esselstyn who limit or forbid various foods like oils, sugar, and refined grains. However, religious vegetarians in Taiwan who avoid meat but not other restricted foods have higher risk biomarkers.
- Studies on Adventist vegetarians find their health benefits may be due more to avoiding coffee, doughnuts and eggs rather than meat itself. Fish-eating Adventists may have lowest mortality while vegan/vegetarian Adventists have similar outcomes to Mormons who avoid substances but not meat.
- Contrary to claims, animal protein is not clearly linked to bone loss and vegetarians often have lower bone density than omnivores