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This is in agreement with a recent study reporting a decreased number of duodenal serotonin containing endocrine cells in FD patients (74)
While a balanced diet or oral supplements are often sufficient for maintaining adequate B12 levels, certain conditions may necessitate vitamin B12 injections
Vitamin B12 shots are the most common way to prevent or treat a deficiency
Tests typically include full blood count, ferritin, vitamin B12, folate, vitamin D, calcium, parathyroid hormone, and renal and liver function, with additional tests such as zinc, copper, and selenium as clinically indicated
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