Vegan is also not a healthy diet.        How much $$ do you have to spend on supplements?       Because there is absolutely NOTHING in a vegan diet that provides  B12, zinc, calcium and iron unless you take supplements.          I have a couple of friends /aquaintenances who are vegan.        After several years  (around 50 yo,   they are completely emaciated)      Basically your body feeds off its own muscle mass to aquire B12 protein