I believe it is from chronic inflammation, our bodies are always fighting infections constantly so an elevated white count would make sense. The only time my doc gets worried is if it is accompanied by fever, other signs of exacerbation (increased cough, feeling tired, more short of breath etc). It won't hurt to talk to your doc about it though <img src="i/expressions/face-icon-small-smile.gif" border="0">
Jenn 40 wCF