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Some conditions that can cause this vitamin B12 deficiency include: Atrophic gastritis, an inflammation of the stomach Surgical removal of part of the stomach or intestines Conditions that affect your intestine's ability to absorb nutrients, such as Celiac disease Pancreatic insufficiency Alcoholism Acquired immune deficiency syndrome (AIDS) Some people who don't have enough of a protein called the "intrinsic factor" also have a vitamin B12 deficiency

Some of the standout findings include: A murine study showed that ipamorelin can reduce muscle strength loss in catabolic conditions induced by corticosteroids

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You may gain weight if you suffer from vitamin B12 deficiency because you are simply too fatigued to exercise enough