The unbound B12 then combines with another protein (called intrinsic factor, which is secreted by cells in the stomach) before it is absorbed by the body in the small intestine and put to work
Many foods like animal products such as salmon are high in vitamin b
Individuals with intestinal disorders like Crohns or Celiac Disease
If you're severely B12-deficient, your doctor may recommend B12 injections into a muscle, making the vitamin readily available to your system
Deficiency is particularly common in elderly people, because the ability to absorb vitamin B12 can decrease with age ( Other people at risk of deficiency include those who have had intestinal surgery, including weight loss surgery
If you're taking antibiotics such as chloramphenicol, colchicine, folic acid, methotrexate, and para-aminosalicylic acid, your doctor may have to monitor your condition for any possible side effects