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This condition can be caused by certain medications and by infections. In some cases, it is caused by a cancer or precancerous condition. Myelofibrosis, bone marrow scarring that can result from various hematologic cancers, typically leads to low blood counts. Pancytopenia can also be caused by aplastic anemia, a bone marrow failure disorder that affects blood cell production.
Dr. David Lipkin Dr. Lipkin. See answer: A low white blood cell count(leukopenia) may or may not be significant. People of African ancestry can normally have a reduced WBC. A diet deficient in Vitamin D and/or lack adequate exposure to sunlight can lead to Vitamin D deficiency. Taking Vitamin D3 600-800 units daily is recommended.