The book "Could it be B12" came out originally in 2005.
There is a second ed. in 2011, but I don't see mention of updated material, just a reprinting. It is possible the newer edition has newer information.
This youtube I believe is from the book you have, but I am not positive:
https://www.youtube.com/watch?v=BvEizypoyO0
It is not complete however, and does not get into MTHFR mutations or much of the methylB12 information.
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Weezie looking at petunias 8.25.2017
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