Autoimmune gastritis is a chronic progressive inflammatory condition that results in the
replacement of the parietal cell mass by atrophic and metaplastic mucosa. A complex …

Hypercobalaminemia (high serum vitamin B12 levels) is a frequent and underestimated
anomaly. Clinically, it can be paradoxically accompanied by signs of deficiency, reflecting a …

OBJECTIVE To investigate the associations of metformin, serum vitamin B12, calcium
supplements, and cognitive impairment in patients with diabetes. RESEARCH DESIGN AND …

Pernicious anemia (PA) is a complex disorder consisting of hematological, gastric and
immunological alterations. Diagnosis of PA relies on histologically proven atrophic body …

Metformin is the only biguanide oral hypoglycemic drug, that is used to treat patients with
type-2 diabetes mellitus. There are some reports of metformin being associated with …

OBJECTIVE: The objective of this study was to evaluate the presence of vitamin B12
deficiency and the factors associated with serum vitamin B12 levels in a sample of metformin …

Objectives To compare the effectiveness of oral versus intramuscular (IM) vitamin B12
(VB12) in patients aged≥ 65 years with VB12 deficiency. Design Pragmatic, randomised …

Anemia is a frequent finding in most diseases which cause malabsorption. The most
frequent etiology is the combination of iron and vitamin B12 deficiency. Celiac disease is …

Contradictory results for concentrations of vitamin B12, holotranscobalamin (holoTC), and
methylmalonic acid (MMA) have been reported. We tested the hypothesis that the …

Aims: To systematically review the literature on daily losses and bioavailability of vitamin
B12. These estimates could be used for deriving recommendations on vitamin B12 intake for …