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Other foods that are high in vitamin B12 include: 3 ounces cooked clams without shells: 17 mcg 3 ounces wild cooked oysters: 15 mcg 1/4 cup fortified nutritional yeast: 8 to 24 mcg 3 ounces Atlantic salmon or canned tuna: 2.5 mcg 1 cup 2% milk: 1.3 mcg What Is The Fastest Way To Fix B12 Deficiency

Vitamin B12 is absorbed from food in the terminal ileum (the last part of the small intestine)

[124] Other causes of B 12 malabsorption include bariatric surgery, pancreatic insufficiency, obstructive jaundice, tropical sprue, celiac disease, inherited intrinsic factor deficiency, and radiation enteritis affecting the distal ileum

Vitamin B12 helps support neurotransmitters, like serotonin and dopamine, which play a role in regulating your mood and alleviating stress

During the hospitalization the boy reported improved mental status, greater appetite for food, and his weight increased by 3 kg