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Anemia: Red Blood Cells
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Anemia is an inadequate supply of red blood cells, resulting in a decrease in the oxygen carrying capacity of the blood. Red blood cells contain the protein hemoglobin, which carries oxygen to all parts of the body. Low levels of red blood cells, and ... hemoglobin, cause a reduction in the amount of oxygen that can be carried to the body. The decreased delivery of oxygen causes the following symptoms:
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Anemia is a condition of too few red blood cells, or a lowered ability of the red blood cells to carry oxygen or iron. Tissue enzymes dependent on iron can affect cell function in nerves and muscles. The fetus is dependent on the mother's blood and anemia can cause poor fetal growth, preterm birth, and low birthweight.
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Anemia refers to a red blood cell count that is below normal. While white blood cells fight infection, red blood cells are responsible for transporting oxygen throughout the body. When red blood cell levels drop too low, the body feels tired due to lack of oxygen. Hence, someone with anemia is often referred to as having “tired blood.”
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Anemia occurs when blood is low in red blood cells. Red blood cells carry oxygen from your lungs to all parts of your body. Without enough red blood cells, your body can't get all of the oxygen it needs and you feel fatigued.
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Anemia is defined as lowering of red blood cells and disruption of their most important function -- carrying oxygen. In cancer patients, it may be mild to severe and may be attributable to a variety of causes. Severity of anemia may increase as the disease progresses.
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Anemia is caused by chronic bleeding, a decrease in red blood cell production, or an increase in red blood cell destruction. A poor diet low in iron can cause anemia, as can some hereditary disorders and certain diseases. However, excessive bleeding due to cancer, childbirth, injury, gastrointestinal tumors, heavy menstrual flow, hemorrhoids, nosebleeds, stomach ulcers, alcohol abuse and surgery is the most common cause of anemia.
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