how long does b12 injection stay in your system A Shot Last? Affecting Factors of B12 How Often Can You Inject

Common Causes of B12 Deficiency Vitamin B12 deficiency can happen for many reasons

International journal of obesity and related metabolic disorders : journal of the International Association for the Study of Obesity , 25 (10), 14421449

doi: 10.1006/geno.1995.9966 21 RamsdenDBWaringRHParsonsRBBarlowDJWilliamsAC

Those with diseases that affect the gut, such as Crohns disease or celiac disease, are also at risk ( Summary Those at greatest risk of vitamin B12 deficiency are vegans and vegetarians, who get little to no B12 from the diet

The vitamins are doing their work quietly at the cellular level

While B12 can be stored in your liver for up to five years, you can become deficient (lacking) in it if you don't get enough