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Interesting. I guess you could still supplement b12
There's been a lot of back-and-forth. B12, like iron and Protein, are digested differently by the gut (with different efficiency) based on how they are consumed.
If absolutely all you care about is nutrition and nothing else, you should be eating a small amount of non-processed red and white meat (and/or seafood) on a regular basis because it is the best and healthiest source of those three things. Key term "small amount"
Interesting that you say this because the high amount of B12 in the meat people buy is because it is artificially supplemented to the animals they slaughter.
That seems like a bit of a red herring even if true. Considering I recognize your handle from elsewhere, I'm going to say "eat what you want" and move on before things get heated.
I understand that your ethics drive your decisions, but my ethics drive mine. As does my nutrition.
Actually, hell. Let me respond to the red herring statement anyway. Yes they supplement cows B12. Not so they have B12 in their meat but because cows need B12 and most of the world's soil is Cobalt-deficient. I'm such a sucker for trolls I suppose; can't let misinformation go unanswered :( I hope an upvoted post in a vegan subreddit works for response?
EDIT: Sorry. I don't really mean that YOU are a troll per se. Misinformation like this is problematic to me because I try to treat people as charitably as I possibly can. But the idea that B12 is in meat due to supplements is one of that family of malicious half-truths that simply could not have been an "honest mistake" from whoever originated it. Whoever started spreading that ABSOLUTELY knows it's a downright falsehood that can be substantiated by half-reads and mis-reads of actual facts. Like picking out a single vaccine study that doesn't rule out autism and starting... well, you lived through what it started as much as I did.
I genuinely don't think YOU knew what you were about to say was fabricated nonsense made to seem defensible from a naive googling. But somebody did.
Let's look at your statement:
There’s been a lot of back-and-forth. B12, like iron and Protein, are digested differently by the gut (with different efficiency) based on how they are consumed. If absolutely all you care about is nutrition and nothing else, you should be eating a small amount of non-processed red and white meat (and/or seafood) on a regular basis because it is the best and healthiest source of those three things. Key term “small amount”
How did you arrive at that conclusion? Not by carefully checking your information I guess. Since a quick Google would have revealed to you that people can get the necessary amount of B12 through supplements. There is no reason to assume it is less healthy.
Sources: Comparative Bioavailability and Utilization of Particular Forms of B12 Supplements
Revisiting Vitamin B12 Deficiency: A Clinician’s Guide For the 21st Century
Effective treatment of cobalamin deficiency with oral cobalamin
That the B12 in the meat people consume is supplemented is not false. Without oral administration of B12 many slaughtered animals wouldn't even produce it at all. Lactating cows and calves get it as well, so do some cattle just as a precaution. You explicitly mentioned white meat (I looked it up and that seems to be the flesh of, for example, swine and chicken) and these animals do not produce their B12 from Cobalt. They need B12 supplements which are administrated orally through their feed.
Sources: Two funny ones, given the context, I think: Vitamin B12 for Chickens B12 for Livestock: Uses, Benefits, and Signs of B12 Deficiency
Influence of vitamin B 12 and Cobalt on growth of broiler chickens and Pekin ducks
To call it fabricated nonsense and implying that people who share that information are troll adjacent does make it seem you have an agenda beyond just stating what is presumably more healthy.