Vitamin B12, whether in supplements, fortified foods, or animal products, comes from micro-organisms.I would consider eating meat, if I could be sure of having organic non-factory-farmed meat whenever I required meat. This is not the case, so I am glad not to have to make the choice of whether to contribute to a system that causes so much damage to the environment, animal welfare and nutrition.
Vegans using adequate amounts of fortified foods or B12 supplements are much less likely to suffer from B12 deficiency than the typical meat eater. The Institute of Medicine, in setting the US recommended intakes for B12 makes this very clear. “Because 10 to 30 percent of older people may be unable to absorb naturally occurring vitamin B12, it is advisable for those older than 50 years to meet their RDA mainly by consuming foods fortified with vitamin B12 or a vitamin B12-containing supplement.” Vegans should take this advice about 50 years younger, to the benefit of both themselves and the animals. B12 need never be a problem for well-informed vegans.
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posted by boo_radley at 10:13 AM on March 12, 2007 [1 favorite has favorites]