Alcohol abuse or alcoholism can cause a decrease in a white blood cell (WBC) count, according to Dr. Sears. A reduction in white blood cells can affect the immune system because white blood cells help to defend the body ... More »

Conditions or diseases that harm or damage bone marrow function or that directly destroy white blood cells are the common causes for low white blood cell count, according to Mayo Clinic. Such conditions or diseases may i... More »

www.reference.com Health Medical Ranges & Levels

Diseases that cause low white blood cell counts include aplastic anemia, human immunodeficiency virus, leukemia and lupus, according to Mayo Clinic. Other causes include rheumatoid arthritis, Crohn's disease and infectio... More »

www.reference.com Health Medical Ranges & Levels

Because there are so many underlying causes for a low white blood cell (WBC) count, treatment options are dependent on the specific cause. For example, a cause for a low white blood cell count can be many different disea... More »

A person knows if his white blood cell count is normal by getting a complete blood count, according to Mayo Clinic. This test measures white blood cells, red blood cells, hemoglobin, hematocrit and blood platelets. More »

In general, a normal white blood cell count ranges from 4,500 to 10,000 white blood cells per microliter, states MedlinePlus. Normal results may vary depending on the lab used, so it is best for patients to talk to their... More »

www.reference.com Health Medical Ranges & Levels

When a person has a good white blood cell count, it means his body produces between 4,500 and 10,000 white blood cells per microliter, according to WebMD. White blood cells are used to protect the body against harmful or... More »