Thats funny. I have been working to eliminate soy from my diet. For environmental as well as health reasons.SOY DIET
A veg diet is low on protein.
These days to supplement my protein intake, I am drinking a glass of soy milk (without sugar, color and preservatives) with good results already showing.
I think soy or soya is the only plant food that contains all the 9 essential amino acids thereby making it a complete protein.
Some time ago, I tried eating a tiny bit of cake containing egg and the infanthood negative symptoms of nausea and stomach pain returned (but fever was missing) and besides due to the high sensitization of my nerves on account of yogic discipline my nerves began trembling and heart beats rose.
I would like to break free of a veg diet some time in future if the sensitivity of my nerves fades but then the childhood allergy to non-vegetarian food would still remain and so I guess that I'll die a virginal vegetarian. LOL.
Environmentally, soy production is a disaster. As for the health benefits, humans for most of their evolutionary lifespan have been eating soy in its fermented form only. This experiment with unprocessed soy as a food additive, soy liquid, etc etc is very new and I suspect that the allergenic effects are underestimated.