A high white blood cell count is associated with cancers of the blood-forming tissues, such as acute lymphocytic leukemia, acute myelogenous leukemia and chronic myelogenous leukemia, explains Mayo Clinic. Caused by an o... More »

Certain types of cancers result in an increase in white blood cells, or WBCs, while other types of cancers result in an increase. The five main types of WBCs include neutrophils, lymphocytes, monocytes, eosinophils and b... More »

A high white blood cell count indicates an underlying problem, such as an infection or reaction to a medication. High white blood cell counts must be evaluated by a doctor, according to Froedtert & the Medical College of... More »

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A high white blood cell count may indicate anemia, infection, allergic reaction or leukemia, states MedlinePlus. Other causes include extensive tissue damage, cigarette smoking and severe mental or physical stress. Takin... More »

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A high white blood cell count can be caused by a variety of factors, including infections, immune system disorders, bone marrow illnesses and certain viruses, according to Mayo Clinic. Cigarette smoking and high stress l... More »

A vitamin D deficiency does not cause a high white blood cell count, according to Mayo Clinic and WebMD. A high white blood cell count, known as leukocytosis, occurs when the body fights infection, reacts to medication, ... More »

A high white blood cell count affects the ability to donate blood, since it is a sign of infection, disease, drug reaction or immune system disorder that must be resolved before donating, state Mayo Clinic and the Americ... More »