How can I lower my WBC? It's always between 8-10 - Normal but high end. Normal differential. Worried about getting cancer from it always been high

You do not have a pr. You do not have a problem with your blood. A WBC count of 5,000 to 10,00 is perfectly normal. Moreover a there is no correlation of a high normal WBC with development of Cancer. Try to control your anxiety....that will do you more good. Take daily walks and get rid of your anxiety by means of Relaxation or practice Yoga.