I've read that B12 can only be obtained from meat and dairy products or fortified foods, like soymilk or cereal. This must only be half the truth. If other animals have B12 in their meat/milk/eggs, they must obtain it from somewhere. Go down the food chain, and obviously, either plants or the bacteria that reside inside us are responsible for the production of B12. I'm hardly even knowledgable about B12, but it seems to me that vegans should be fine as long as they have a healthy balance of bacteria and eat a balanced plant-based diet. I for one drink soymilk, so I am not so worried, but I also believe that too much of anything can be harmful and point out that there is evidence that soy can harm thyroid function and cause the diseases it is touted as preventing.
Any thoughts/insights?
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