This group of anemias is from red blood cells being destroyed faster than bone marrow can replace them. The effects of these types of diseases range from mild to life-threatening. Diseases such as leukemia and myelofibrosis can affect how the bone marrow makes blood. Anemias linked to bone marrow disease.
Causes of aplastic anemia include infections, certain medicines, autoimmune diseases and being in contact with toxic chemicals. This rare, life-threatening anemia occurs when the body doesn't make enough new blood cells. Examples are cancer, HIV/AIDS, rheumatoid arthritis, kidney disease and Crohn's disease. Diseases that cause ongoing inflammation can keep the body from making enough red blood cells. This can lead to vitamin deficiency anemia, also called pernicious anemia. A diet that doesn't have enough of these and other key nutrients can result in the body not making enough red blood cells.Īlso, some people can't absorb vitamin B-12. Besides iron, the body needs folate and vitamin B-12 to make enough healthy red blood cells. Blood loss might be from heavy menstrual bleeding, an ulcer, cancer or regular use of some pain relievers, especially aspirin. Pregnant people can get this type of anemia if they don't take iron supplements. Without enough iron, the body can't make enough hemoglobin for red blood cells. Bone marrow needs iron to make hemoglobin. Too little iron in the body causes this most common type of anemia. Causes of anemiaĭifferent types of anemia have different causes. To make them, the body needs iron, vitamin B-12, folate and other nutrients from foods. Spongy matter inside many of the large bones, called bone marrow, makes red blood cells and hemoglobin. And it lets red blood cells carry carbon dioxide from other parts of the body to the lungs to be breathed out. Hemoglobin lets red blood cells carry oxygen from the lungs to all parts of the body. Red blood cells have an iron-rich protein that gives blood its red color, called hemoglobin. White blood cells fight infection, platelets help blood clot and red blood cells carry oxygen throughout the body. The body makes three types of blood cells. The body destroys red blood cells and the hemoglobin that's in them.Bleeding causes loss of red blood cells and hemoglobin faster than they can be replaced.The body doesn't make enough hemoglobin or red blood cells.If you're told that you can't donate because of low hemoglobin, make a medical appointment.Īnemia occurs when the blood doesn't have enough hemoglobin or red blood cells. Some people learn they have low hemoglobin when they donate blood. Low levels of the protein in red blood cells that carry oxygen, called hemoglobin, is the main sign of anemia. Make an appointment with your health care provider if you're tired or short of breath and don't know why.
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