Well, now you know one verified case that requires meat to survive.
I will not discuss the specifics as the conversations go as such (hundreds of times):
Me: what can i eat that provides protein?
Veg: this and this and this...
Me: i am allergic to all those things.
Veg: than this, and this...
Me: i am allergic to all those things.
Veg: well, i am sure there is something... you just have to become a vegetarian.
Or in other words, every one of them told me to die for their view of animal lives matter.
And when i raise a chicken nothing dies in the process specifically...
except the chicken and the lettuce.
I can understand being against modern farming and ranching industrial practices. They are abhorrent.
However, we, on this planet are in a symbiotic relationship with all life. All the life exists to be consumed by other life. There isn't one piece left out.
If it was left out, it wouldn't exist.
Reincarnation exists. Life exists to create new life.
Sure we can rise above the need to ingest food and live off of prana directly, but we have a long way to go before even a decent percentage could do that. Further, when a planet does that, all those supporting species stop existing.
I have never heard of anyone else describing such allergies to vegetables and fruits, but ok. I had allergies growing up to various things but over time I learned to consciously de-condition them and I don't have them now. That's what I would do in such a situation. There are therapists who do this or it can be done internally.
It is common for people to mistake life for death - amazingly. If life consumes life against it's will, then that life dies and some of it changes form. The vibration of the will decreases when it is overpowered - that is the cause of death in general on Earth.