Why are you spamming this thread by posting biased sources? Michael Greger is a vegan, and is not exactly unbiased.
https://www.reddit.com/r/ScientificNutrition/comments/adfowt...
https://www.reddit.com/r/ScientificNutrition/comments/adfowt...
It's a shame from a nutrition standpoint, but veganism is NOT a diet for optimal nutrition. It is an interesting diet from an ethics standpoint, I grant them that. And despite the long-term wasting away effects, veganism is superior to a standard american diet loaded with sugar, heavily processed carbs and vegetable/seed oils.