H Pylori May Cause Vitamin B12 Deficiency And Pernicious Anemiahttp://articles.mercola.com/sites/articles/archive/2000/05/14/h-pylori-b-12-deficiency.aspxPernicious anemia is a very serious disorder, which can cause irreversible damage, resulting from a deficiency of vitamin B12. This study detected H. pylori in 56% of 138 patients with pernicious anemia. Upon treatment and eradication of the H. pylorienCommunityServer 2008.5 SP1 (Build: 31106.3070)