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.
1 Red blood cell size and color. 2  With iron deficiency anemia, red blood cells are smaller and paler in color than normal. 3  Hematocrit. 4  This is the percentage of your blood volume made up by red blood cells. 5  Normal levels are generally between 34.9 and 44.5 percent for adult women and 38.8 to 50 percent for adult men. Hemoglobin. 2  Lower than normal hemoglobin levels indicate anemia. 3  The normal hemoglobin range is generally defined as 13.5 to 17.5 grams (g) of hemoglobin per deciliter (dL) of blood for men and 12.0 to 15.5 g/dL for women. 4  The normal ranges for children vary depending on the child's age and sex. 5  Ferritin.