17/10/2022
What red blood cells do
Your body makes three types of blood cells β white blood cells to fight infection, platelets to help your blood clot and red blood cells to carry oxygen throughout your body.
Red blood cells contain hemoglobin β a red, iron-rich protein that gives blood its red color. Hemoglobin enables red blood cells to carry oxygen from your lungs to all parts of your body and to carry carbon dioxide from other parts of the body to your lungs so that it can be exhaled.
Most blood cells, including red blood cells, are produced regularly in your bone marrow β a red, spongy material found within the cavities of many of your large bones. To produce hemoglobin and red blood cells, your body needs iron, vitamin B-12, folate and other nutrients from the foods you eat.
Causes of common types of Anemia
Common types of Anemia and their causes include:
Iron deficiency anemia. Iron deficiency anemia is caused by a shortage of the element iron in your body. Your bone marrow needs iron to make hemoglobin. Without adequate iron, your body can't produce enough hemoglobin for red blood cells.
This type of Anemia is often caused by blood loss, such as from heavy menstrual bleeding, an ulcer, Cancer, a polyp somewhere in your digestive system, and prolonged use of aspirin or drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs).
Vitamin deficiency anemias. In addition to iron, your body needs folate and vitamin B-12 to produce sufficient numbers of healthy red blood cells. A diet lacking in these and other key nutrients can cause decreased red blood cell production.
Additionally, some people may eat enough B-12, but their bodies aren't able to process the vitamin. This can lead to Vitamin deficiency anemia, also known as perniciousmia.
Anemia of chronic disease. Certain chronic diseases β such as Cancer, HIV/AIDS, Rheumatoid arthritis, Crohn's disease and other chronic inflammatory diseases β can interfere with the production of red blood cells,