Often, people say something like
"I'd love to be vegan, but I have low iron levels and a vegan diet would be unhealthy for me."
I'm not a physician and I can't just say
"I assure you, your iron intake will not suffer, but maybe even improve."
I still don't really know whether there are people who can't be vegan for health reasons.
What health conditions can people have such that a change to a vegan diet would be unhealthy?
Some examples I've witnessed (only personally):
- The iron argument, multiple times, especially about adult women.
- Someone claiming that he has a special kind of anaemia and he needed to eat beef because of it.
- A vegetarian with Irritable Bowel Syndrom turning to meat eating because of his doctors recommendation.