From my unprofessional understanding of nutrition, I believe a truly healthy long term vegan would need to supplement not just B12 but Vitamin A (As far as i know Beta carotene can only convert to A at a 6 :1 ratio with dietary fat plus others) , Vitamin D during witer time and vegan Omega 3 fatty acids (DHA and EPA) as well.
I think all prominent vegan societies should make the above supplementation as protocol or mandatory requirements so that there is less "dropout" due to deficiency issue.
Last edited by escapee; 02-03-2007 at 01:13 AM.
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