It's pretty common for vegans to suffer hair loss and develop dark circles under their eyes (anemia iirc)
Pass
Pass
It'd be useful to compare and contrast those against the risks of food poisoning from undercooked and contaminated animal products, and the sense of having supported and received food from potentially unsanitary animal product preparation centres.
For every bonkers assertion you will find "evidence" by "just googling it". I would be careful not to get trapped in confirmation bias in this way.
Like I said, just google it. Well documented phenomenon
https://www.reddit.com/r/vegan/comments/5y8o33/do_yall_have_...
It doesn’t sound like it’s a common problem, from my cursory investigation