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From: temp (
Subject:         Re: risk not= cause
Date: April 20, 2015 at 2:06 am PST

In Reply to: Re: risk not= cause posted by Dr Gosia O'Reilly on April 20, 2015 at 1:31 am:

Gosia wrote - "Yes, there are claims about the risks, and these are well substantiated of course, but one needs to be careful when reading such studies, and differentiate between having low B12 levels, or actual symptoms of B12 deficiency, being reported in them. "

Temp wrote -

Well in this case the studies show both direct casusal relationship between low levels in vegans and the cause being directly a lack of dietary B12 intake.

And the studies also show actual symptoms if thats going to be a main diagnostic criteria for you of b12 deficiency(elevated homo-cysteine being a common side-effect of having low b12 levels in those following alternative vegan diets).

Genetic defects and other factors can play a role, but again its irrelevant to the studies on B12 status and diet, because they have generally all found the low levels/deficiency of b12 that vegans suffer from is DIRECTLY caused by lack of dietary intake.

The study you linked 95% of the groups were all animal foods consumers i.e omnivores, lacto-ovo vegetarians etc. There were only 2 vegans in the study as far as i can see ?

This is cherry picking selective studies and not very relevant ones at that.

Firstly the participants were majority animal food consumers(omnivores, dairy eating vegetarians etc) so obviously they had fine B12 levels and from what i can see there were only 2 vegans used in the study ?

There are much more relevant studies done on actual vegans showing direct causal relationship between b12 deficiency and elevated homocysteine like the previous study i linked. Im trying to pool a resource of these together on my site in regards to vegan diets and B12 deficiency, there are more added on there -

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