[esailija]

Chronic reflux, constipation, nocturnal urination etc also make these diets unsustainable.

As buff vegan the proportion of buff vegans among vegans is probably the same as proportion of buff non-vegans among non-vegans. You have to be braindead not to be able to figure out what to eat as vegan to grow muscle, in the worst case I guess you can go to factory farmers who have mastered the art of growing muscle from plants..