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Megaloblastic anemia is usually caused by a deficiency of folic acid or vitamin B12. Other causes are:.Alcohol abuse Certain inherited disorders Drugs that affect DNA, such as chemotherapy drugs Leukemia Myelodysplastic syndrome Myelofibrosis.
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Folate deficiency means you have a lower-than-normal amount of folic acid, a type of B vitamin, in your blood.
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Getting too little vitamin B12 may leave you feeling fuzzy in your thinking and lead to numbness or tingling in your hands and feet.
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