Vegan health

Isn't it kind of obvious that veganism (as opposed to mere vegetarianism - especially of the variety where dairy and eggs are still eaten) isn't that great a health plan for humans when pro-vegans have to write articles about the great care that must be taken by vegan pregnant mothers to get all the nutrition they and their embryos need?

Yesterday, I saw on twitter some young women who said she was going to try eating some form of flesh again for health reasons, but she tried mussels and found them repulsive.  She also went on and on about how traumatic it had been and how the mere idea of eating flesh (even of a brainless bivalve) makes her skin crawl.   It sounded to me like some borderline form of anorexia.

I know that most people have some image of eating some forms of animal food as being repulsive - I wince at the idea of eating roasted bone marrow on My Kitchen Rules for some reason, and lamb brains are icky too -  but to have a generic revulsion for all form of animal protein, including all forms of seafood, seems pretty exceptionally broad.

Anyway, you do read of her type of health issue from time to time - did I post about the vegan Youtube woman who secretly started eating a small amount of meat again on doctor's advice?   I'm not sure how many vegans do have to give it up for health reasons, but it seems to be a not insubstantial problem...