Ive felt that part of the confusion and controversy on B12 was related to its being hard to detect (evan when present )till actual lack of it was manifesting.
If we have an apendix and we havent scoured or sterilized the tract we should be germinating B12, course Walters and Orlee add to this consideration.Have you read Orlee's book, Minerals for the Genetic Code?
Also for me your topic is related to the website http://www.fibermenace.com
in that this Dr stresses the living flora of the gut being comprimized by commonly considered healthy tactics we use to stay regular.