A nice article on her experience.

http://macrobiotics.co.uk/articles/dilemma.htm

very interesting read Justin - thanks for posting. I do worry about not getting enough b-12 even though i do take a supplement weekly.

Hi guys - the B12 thing has me worried, too. I take the BioCare Vitasorb drops - four daily - and I worry if I'm leaving them to be absorbed under my tongue long enough! As soon as I put them in, I start salivating, so who knows if enough is getting into my system . . .  Sorry - gross, I know!!! Have been thinking of getting a test to see if I am deficient in any other vitamins etc. - I take a "Bone Strength" supplement as well - but I feel really well so maybe I shouldn't stress about this???

Thanks for posting this, Justin - great article!

I found this in a recent search for B12 info:

Testing B12 status

A blood B12 level measurement is a very unreliable test for vegans, particularly for vegans using any form of algae. Algae and some other plant foods contain B12-analogues (false B12) that can imitate true B12 in blood tests while actually interfering with B12 metabolism. Blood counts are also unreliable as high folate intakes suppress the anaemia symptoms of B12 deficiency that can be detected by blood counts. Blood homocysteine testing is more reliable, with levels less than 10 micromol/litre being desirable. The most specific test for B12 status is methylmalonic acid (MMA) testing. If this is in the normal range in blood (<370 nmol/L) or urine (less than 4 mcg /mg creatinine) then your body has enough B12. Many doctors still rely on blood B12 levels and blood counts. These are not adequate, especially in vegans.

This article says Methylcobalamin is the best form of B12 to use  (of three usually administered: Hydroxocobalamin, Cyanocobalamin, Methylcobalamin). 

http://www.NaturalNews.com/027045_vitamin_B12_cyanocobalamin_methylcobalamin.html

Thank you Diane - this is so helpful and I'm going to look up the whole article - unfortunately the supplement I'm taking is made hydroxocobalamin - more research needed I guess!