What is the cause of increased white blood cells

Blood in the human body contains several types of cells, such as red blood cells, white, and platelets, each with its specific functions. The number of white blood cells in the human body is normal between 4400 and 11000 cells / mm3 of blood, and divided white blood cells into five sections, according to their form and coloring them certain, and these sections include the cells of the neutral, which form between 40% and 75% Of white blood cells, acid cells that make up between 1% and 6%, and basal cells that make up less than 1% of white blood cells. These three are called granule cells to contain cytoplasm in granules.
White blood cells also comprise both monocytes and lymphocytes, called monocytes. White blood cells are a component of the immune system in the human body. They resist many diseases and infections, are produced in the bone marrow, and then released into the bloodstream. White blood cells may be increased or decreased in numbers. The increase may be due to physical exertion, seizures, emotional trauma, pain, pregnancy or birth, as well as many diseases, infections or poisoning. , And the lack of numbers may be due to suffering from the types of infection, or as a side profile of some medicines, and may be associated with some cases of chronic anemia, malnutrition,