total gastrectomy b12 injection Nutrient Deficiencies — No Stomach For Cancer Clinical Course of Vitamin B12
Description
So, why the concern

Particularly important for those on acid-blocking medications, metformin, vegetarians, or patients with gastritis

Vegans with health issues started turning to me for help, and I saw a slow trickle of vegan activists with B12 deficiency symptomstypically tingling in the fingers and toes

Gonzalez, 2007

Vitamin B12
Decreased vitamin B12 availability induces ER stress through impaired SIRT1-deacetylation of HSF1
