Diet is frequently a cause resulting in either microcytic or macrocytic anemia, smaller or larger than normal RBCs respectively. Iron, vitamin B12, and folate (Vitamin B9) are usually involved.

Microcytic cells have smaller than normal MCV while macrocytosis refers to large cell size. [9, 14, 15] The MCV is larger than normal in megaloblastic or macrocytic anemia and smaller than normal ...

Macrocytic anemia is a condition in which red blood cells are too large. The enlarged red blood cells are not fully developed and do not function the way they should. This causes diminished oxygen ...