what causes low white blood cell count?

Answer 1

Low White blood cell counts are most often seen in advanced HIV/AIDS paitents..

Some other disorders cause it as well.

Also some people that have lived excessivly clean lives can have low white blood cell counts.

Answer 2

There are a number of conditions that cause this. Being overtired and having a repressed immune system as a result is one of them.
Viral infections can lower the blood cell count, but normally the count is increased.

Answer 3

infections cause HIGH white blood count, because white blood cells multiply to attack an infection.

A low count could be the result of bone marrow malfunction, the effects of radiation, something wrong with the liver or spleen, and some other disease processes.

Answer 4

White blood cells (a.k.a. leukocytes) are cells which form a component of the blood. They are produced in the bone marrow and help to defend the body against infectious disease and foreign materials as part of the immune system. There are normally between 4x109 and 11x109 white blood cells in a litre of healthy adult blood - about 7,000 to 25,000 white blood cells per drop. In conditions such as leukemia this may rise to as many as 50,000 white blood cells in a single drop of blood. As well as in the blood, white cells are also found in large numbers in the lymphatic system, the spleen, and in other body tissues.
The name "white cells" derives from the fact that after centrifugation of a blood sample, the white cells are found in the Buffy coat, a thin layer of nucleated cells between the sedimented red blood cells and the blood plasma, which is white in color (or sometimes green, if there are large amounts of neutrophils in the sample, which are high in green myeloperoxidase).

Answer 5

the major cause is Viral or Bacterail infection.