People love to bring up B12 like it's a reason to eat meat. But here's the irony Even meat eaters can be deficient in B12. That's because B12 comes from bacteria in B12 MIC: Explained AgelessRx In the meat and dairy industry, animals are often supplemented with Vitamin B12 due to modern farming practices that limit their natural intake. So people who eat animals are simply taking a B12 & B Complex Injections for Energy Boost The B12 Shot: What Every Human Needs to Know About Injectable Vitamin B12