###Human: Can being a vegan cause anemia with high vitamin B12 level? ###Assistant: Hello. I have reviewed your query and below is my advice. The peptic ulcer can lead to minor bleeding in the intestinal tract and so anemia can develop due to it. For ulcer healing, Rabeprazole like antacid can be prescribed for 2 to 4 weeks. Stool routine micro examination and occult blood test are done to rule out parasitic infestation and minor bleeding from the gastrointestinal tract. Your CBC and iron profile are suggestive towards iron deficiency for which Orofer XT like Ferrous ascorbate containing medication can be prescribed for two to three months. For high B12 level, you can investigate further with SGOT, SGPT, urea, creatinine estimation to rule out liver and kidney disease. In these diseases, excretion of B12 is affected and so level can be high. The other cause for high B12 is a myeloproliferative neoplasm. For that, you can investigate with full CBC and peripheral smear examination report to check if any abnormal cells are present or not. In this portal, you can always upload report while asking the question. Hope this will help you while you consult the doctor. I would be happy to help you further whenever needed. Best regards.