We used to get B12 from bacteria in the soil, but these days we clean our food immaculately, and we're also ruining our soil. My understanding is that B12 defic

We used to get B12 from bacteria in the soil, but these days we clean our food immaculately, and we're also ruining our soil. My understanding is that B12 deficiency is a potential problem for everyone; vegan diets are just under more scrutiny. Also, the whole notion of "supplements" is not very useful; it's all just food. I don't know how B12 is produced, but if they're growing it by culturing the same bacteria we used to get B12 from, we have only industrialized the same symbiotic relationship we already had with certain microbes.