What is Neutrophilia and Why Should You Care?
Published: Sep 04, 2024
Neutrophilia sounds complicated, but it's basically just having too many white blood cells called neutrophils. Let's break down what it means and why it matters.
Contents
Understanding Neutrophilia
Neutrophilia refers to an increase in neutrophils, a type of white blood cell, beyond the normal range. For adults, this means more than 7700 neutrophils per microliter of blood. Neutrophils are essential for fighting infections, so a high count can occur when the body is responding to a problem.
Common Causes of Neutrophilia
Infections are a big cause of neutrophilia as the body pumps out more neutrophils to tackle invaders like bacteria. Other common causes include inflammation from conditions like rheumatoid arthritis or even stress and exercise. Certain medications and smoking can also lead to elevated neutrophil levels.

When to Seek Medical Advice
While neutrophilia can be a normal response, sometimes it signals more serious issues like blood disorders. If you have symptoms like unexplained weight loss or a persistent high fever, it's time to see a doctor. Early evaluation and diagnosis are key to managing any underlying health concerns.
Frequently Asked Questions
It's when your body has an unusually high number of neutrophils.
Yes, stress and exercise can temporarily increase neutrophil levels.
Not always, but it can indicate underlying health issues.
Yes, smoking is a common cause of mild neutrophilia.
Key Takeaways
Neutrophilia can be a sign of your body fighting an infection or something more serious, so don't ignore it.
References
- Hollowell JG, et al. Hematological and iron-related analytes. Vital Health Stat 11 2005; :1.
- Ward HN, Reinhard EH. Chronic idiopathic leukocytosis. Ann Intern Med 1971; 75:193.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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