Why is My white blood cell high?
Several factors can contribute to an elevated white blood cell count, also known as leukocytosis. Here are some common causes:
1. Infection: When the body fights an infection, such as a bacterial or viral infection, the white blood cell count increases to help combat the invading microorganisms. This is a normal response to illness and usually resolves once the infection is cleared.
2. Inflammation: Chronic or severe inflammation, such as that caused by autoimmune diseases (e.g., rheumatoid arthritis, lupus) or inflammatory bowel disease, can also lead to an elevated white blood cell count.
3. Allergic Reactions: Severe allergic reactions, such as anaphylaxis, can cause a sudden and significant increase in white blood cell count.
4. Certain Medications: Some medications, such as corticosteroids, can temporarily increase the white blood cell count.
5. Blood Disorders: Some blood disorders, such as leukemia, lymphoma, and multiple myeloma, can cause a sustained increase in white blood cell count due to abnormal production of white blood cells in the bone marrow.
6. Stress and Exercise: Short-term stress or strenuous exercise can cause a temporary increase in white blood cell count, which usually returns to normal levels after the stressor or exercise is over.
7. Smoking and Alcohol: Smoking and excessive alcohol consumption can also affect white blood cell counts. Smoking can increase white blood cell count, while excessive alcohol consumption can decrease it.
8. Pregnancy: During pregnancy, there is a physiological increase in white blood cell count as part of the body's preparation for childbirth and the immune changes that occur during gestation.
9. Recent Surgery: After major surgeries, the white blood cell count can temporarily increase as part of the body's healing response.
10. Splenectomy: Removal of the spleen (splenectomy) can cause a persistent mild elevation in white blood cell count because the spleen usually filters and regulates white blood cells.
It is important to note that a high white blood cell count on its own does not provide a specific diagnosis. If your white blood cell count is elevated, your doctor will consider your medical history, symptoms, and other factors to determine the underlying cause and recommend appropriate treatment. If you have persistent or unexplained elevated white blood cell count, it is essential to follow up with your healthcare provider for further evaluation and management.