Originally Posted by Tatsuhiro Satou
B12 is a big joke, more meat eaters are B12 deficient than vegans.
For one, thats only because meat eaters outnumber vegans. Secondly, a certain fraction of everyone
has absorption or metabolism issues with B12. So vegans are subject to the same deficiency rate as meat eaters, plus whatever deficiency they get from not consuming B12 because they naively think its a big joke or an evil omni plot.
B12 is produced by bacteria in poop. Many animals have different modes of digestion, basically allowing them to redigest their own feces. Other animals eat feces they find. I remember one clinical study where they took deficient vegans, extracted the B12 from their poop, made them eat it, and they were able to absorb it... so if one is ok with the idea of making their own crappè frappè that would work...
But B12 suppliments are a good idea.
You can get pills, lozenges, liquids, or you can buy cheap pills, mash them to powder, and use it to fortify your own cinnamon or powdered coffee creamer, whatever. B12 is cheap and easy.
Vitamin D is worth looking at if your in the habit of using sunscreen, are not near the equator and have dark skin, or are far from the equator and its winter.
A variety of fruits, veggies, and whole grains should supply all other nutrients quite easily.