In a trivial sense, of course more omnivores incur B12 deficiency problems simply because there are more of them. Of course, this is not what is at issue. What we need are accurate incidence rates (and ideally breakdowns of the various causes of B12 deficiency) and this would require very large samples of people.
FACTORS THAT AFFECT DIETARY B12 NEEDS
View original post 3,182 more words