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From: Dr Gosia O'Reilly (
Subject:         Re: Vegan Diet & Vitamin B12 Deficiency Study Resource Thread
Date: April 20, 2015 at 4:34 pm PST

In Reply to: Vegan Diet & Vitamin B12 Deficiency Study Resource Thread posted by temp on April 20, 2015 at 5:56 am:

Yes, I agree that education for vegans is important.

As far as your other comment, let me explain. I do not feel the need to reinforce my point that risk, or association, is not equivalent to causation. This is a standard motion in statistics. Why should I be spending time trying to argue the obvious?

"I have put more science here on the table and all i have got in return to reinforce your point was a majority omnivore/vegetarian study rather than vegan."

I don't think your comment is fair, and this is why I decided to respond here once more. I provided a link to my article (, with plenty of references there. As example, in there, a quote:
"Modern science clearly recommends B12 supplementation for vegans, and the views that long-term veganism would eventually lead to B12 deficiency and that vegans are at a higher risk than others, seem a standard [14,32,38,54]."

When I do research, I to not only look for studies that support my beliefs, rather, I look hard for all spectrum of studies. So this is what I did when I wrote my article. I have nothing new to add. Until I do some more research on more recent publications, which if I do, I will share again.

Here, you are saying that risk proves causation, I am saying that it does not. So to me, it is the end of the argument. I do not think I have been unforthcoming in sharing. So, anyway, that's it from me.

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