Vegetables, if eaten to the exclusion of everything else , turn people into glassy-eyed, humourless, dogmatic, supporters of the vegan religion. Cows are vegans and the combined anal effusions of the global bovine herd is accelerating global warming.
I wouldn't be at all surprised if the human vegan equivalent was doing similar damage.
Isn't it now our duty to eat as much beef, veal, pork, lamb, mutton, venison, duck, chicken, pheasant, grouse and goose as possible and stem the methane-accelerated global warming, climate change tide?