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 »

HIV can cause patients to experience low white blood cell counts, states PDR Health. Patients with HIV often have issues with low leukocytes and low neutrophils, both of which are white blood cells. 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

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 »

While the range of a normal white blood cell count is the same for everyone, the normal range of 4,000 to 11,000 is a wide one. Actual white blood cell counts vary depending on a person's gender and size, according to Ca... 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 »

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 »