Tell him that with so many fortified food these days, kids don't need to eat low quality life forms.
trololol.
Anyone know a good source of vegan calcium? Something I havn't thought of like.. rice or oat milk; something like.. the magical berry, from magic land.. mostly commonly eaten by magicians, who don't like crumbly toe nails.
Vegetarian is easy... lots of animals do it.. they just have the help of milk for a little while.. where as you can have it for as long as you want... and cheese and every other thing. Personally i'd go out and get a blood test now before you start

then you have a nice basis to check back on and form your own thoughts about how to manage it.
I wasn't joking entirely though, fortified foods are pretty abundant... fruit and veges will be a heap of your diet?? Fresh food is mostly the idea, do you have a garden at home that could grow some shtuff? If you randomly plant some veges or something, it would probably show them you are serious hahaha.
Hmmm you don't really need to shock and awe them i'm sure most people grasp the whole deal, it is why they block it out... because it is an unnessesary emotional and physiological toll/drain when they are fine trusting the market place to provide them with clean food, and media to provide the with the most sustainable diet.
Maybe go for the 'interesting facts' approach... like... b12 can be found in many places for human consumption. or.. that Einstein didn't eat meat.
~d~