Final answer:
An increase in white blood cell count may indicate the presence of internal parasites.
Step-by-step explanation:
An increase in white blood cell count may indicate the presence of internal parasites. Elevated white blood cell count, also known as leukocytosis, is a natural response of the body to fight off infections or diseases. When there are internal parasites in the body, the immune system releases more white blood cells to combat the infestation.