Cigarettes and Other Tobacco Products. Revised May 2016. Provides an overview of the effects of cigarette and other tobacco products, including their effect on the brain, other health effects, approaches to smoking or nicotine cessation, and overall use among youth.
The average male adult has about 5 million red blood cells per cubic millimeter of blood, while the average female adult has about 4.5 million red blood cells per cubic milliliter of blood. This may vary by about 300,000 to 500,000 red blood cells.
Normally, people produce about 100 billion white blood cells a day. The number of white blood cells in a given volume of blood is expressed as cells per microliter of blood. The total white blood cell count normally ranges between 4,000 and 11,000 cells per microliter. The proportion of each of the five major types of white blood cells and the total number of cells of each type in a given volume of blood can also be determined through laboratory tests.