Leave as dab page for now. The difficulty is that sources use the term very differently to refer to a vegan, vegetarian or semi-vegetarian diet. There are several physicians and others selling particular "plant-based diets" that they say work miracles because of this or that ingredient, omission or combination, and very few MEDRS-compliant sources offering definitions. There was even someone who tried to trademark the term "plant strong." So I think this should remain a dab page until there are more MEDRS sources, or it should be redirected to semi-vegetarianism or vegetarianism, with a sub-section in one of those articles. Of those two options, I think a dab page would be most helpful to readers.  (talk)