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A less common type of the genetic form comes from changes in the HJV or HAMP genes
B12 injections can help restore B12 levels and alleviate symptoms in those with these conditions
Is it possible to take too much vitamin B12
Folic acid can decrease the effectiveness of some medications, including phenytoin for epilepsy or methotrexate for cancer treatment
Roux-en-Y gastric bypass surgery (RYGB) but not sleeve gastric bypass surgery or gastric banding, increases the risk of vitamin B 12 deficiency and requires preventive post-operative treatment with either injected or high-dose oral supplementation
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