what does low white cells mean?
<answer> A low white blood cell count is an indicator of serious infections, bone marrow deficiency, autoimmune disorders and certain types of cancer. <context> Quick Answer. A low white blood cell count is an indicator of serious infections, bone marrow deficiency, autoimmune disorders and certain types of cancer, according to MedlinePlus. Several types of medications, such as anti-seizure drugs and chemotherapy drugs, also cause decreased WBC counts.