> There are hundreds of ethnic groups in india
> with a great range in dietary traditions. Those who choose to use mostly
> plants withdraw themselves from the vit b12 producing cycle with the
> problems as above. Those ethnic groups at hand have no vit b12 problems.

"'Suzuki1 (1995, Japan) studied 6 vegan children eating a genmai- saishoku
(GS) diet, which is based on high intakes of brown rice and contains
plenty of sea vegetables, including 2-4 g of nori per day ("dried laver");
as well as hijiki, wakame, and kombu. The foods are organically grown and
many are high in cobalt (buckwheat, adzuki beans, kidney beans, shiitake,
hijiki). Serum B12 levels of the children are shown:

http://www.veganhealth.org/b12/plant"

The info above does not appear at the link above. No mention of brown
rice at all. The one prepared food and seaweed are however discussed on
the above link you provide. That entire site is a good one I have
consulted before. It doesn't take a radical food cultist stance and wants
to know as do I the real science behind one's choice to eat a mostly plant
based diet. Here is what it does say about the info you presented:

Nori
" The results indicate that B12 in raw nori can be changed into harmful
inactive B12 analogues by drying, and that dried nori decreases B12
they
believe that raw nori is an excellent source of genuine B12.
I disagree with their conclusion that raw nori is an excellent source
of active B12. While eating raw nori, the subjects'uMMA levels
increased 5%. While this was not enough of an increase to be
statistically significant, it indicates that the raw nori did not
improve B12 status (which would have required MMA levels to drop,
rather than increase). "
The seaweeds:

Please
note that 30 g is a lot of seaweed. A serving size would be closer
to 3 grams. Seaweeds also tend to be very high in iodine, which
can cause problems at high intakes. So, consuming mass quantities
of seaweed is unadvisable.