Re: Gabriel Cousens' B-12 material
Mark Hovila <[log in to unmask]>:
>Well, I wouldn't say it's necessarily persuasive, but what he was saying
>seemed reasonable to me. He doesn't just make assertions without giving
>some kind of citation or basis to back it up. He cited a number of studies
>suggesting that dietary B12 deficiency is rare among healthy vegans and all
>other types of vegetarians. He says that low serum levels, without
>neurological, hematological or any other clinical evidence of B12
>deficiency, is not necessarily an accurate way to diagnose B12 deficiency.
He cites the Immerman  review paper which claims that earlier
that allege B-12 deficiency on veg diets, are inconclusive. In the
Beyond Veg section on B-12, I critique Immerman's paper and show
how his (Immerman's) review criteria were flawed and logically
So far, most of the claims that one can show low levels of B-12
symptoms are traced to old work by Baker (late 70's, early 80's).
I have tracked some of these refs down, only to find that the
topic is mentioned in passing (maybe 1-2 lines in the ref),
with no supporting data/discussion. It *appears* to me that such
are based on limited evidence. However, I did not cover this
claim in the Beyond Veg section as I wanted to do more searching
of Baker's work, before commenting on the website on the topic.
>He says research shows that between 23.7% to 96.4% of B12 is destroyed by
>boiling or baking, depending on the food type and the length of heat
>processing. He goes into the causes of B12 deficiency, signs of B12
>deficiency, and he has recommendations for what to do when you have it.
>There's lots more, but maybe that gives you a basic idea.
Loss of B-12 in cooking is dicussed at:
The data on cooking loss of B-12 are limited and not very convincing
either way, at present.
>Yeah, I'm considering supplementation as well. I've avoided it in the past
>because I was under the impression that all B12 pills came from dessicated
>beef livers or sewage sludge from porta-potties. But I understand that
>Hallelujah Acres is selling a vegetarian B12 pill now.
It is my understanding that B-12 pills are made using bacterial
cultures. All (or nearly all) B-12 pills are vegetarian, so long
as they don't contain fillers or stabilizers made from animal