PMC 9426629
A deficiency can occur for several reasons, such as pernicious anemia (a condition where the body cannot absorb vitamin B12 from the diet), certain medical conditions (e.g., Crohn's disease, celiac disease), surgical removal of part of the stomach or intestine, or strict vegetarian/vegan diets if not adequately supplemented
Once your questions have been answered, youll sign a medical consent form, and an experienced medical assistant or phlebotomist will administer the injections
Lyophilized powder is hygroscopic, meaning it greedily pulls moisture from the air, which is a fast track to degradation
Allergy risk is very low, but not zero
Elevated B12 and cancer what the evidence supports and what it does not A high B12 has been associated with cancer in observational studies, a link that understandably draws attention