<http://schema.org/description>
"Older people, vegetarians and vegans should take special care to get enough vitamin B12 through changes in their diets, a review of scientific studies on the vitamin has concluded. In the article, published in ACS' Journal of Agricultural and Food Chemistry, the authors say that many of the best-known sources of vitamin B12 actually contain a form of the vitamin that humans can't use."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2013-07-vitamin-b12-deficiency-vegetarians-vegans.html>