Macrocytosis: Large red cells, or macrocytosis, can be due to vitamin deficiencies (b12, folate, (folic acid) thiamine), alcohol use, an underactive thyroid, liver disease, excessive production of new red blood cells (reticulocytosis), and bone marrow disorders such as myelodysplastic syndrome. Some people are born with big red cells. Please see a hematologist so that the correct diagnosis can be made.
Answered 11/27/2017
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