General Medical Advices

Causes
Although many parts of the body are essential for red blood cells, most of the work is done in the bone marrow, the soft tissue in the center of the bones that helps form blood cells.

Healthy red blood cells are between 90 and 120 days. Body parts removed after old blood cells. A hormone called erythropoietin produced in the kidneys gives the signal to the bone marrow to produce more red blood cells.

Hemoglobin is the protein that carries oxygen within red blood cells and gives them their red color. People with anemia do not have enough hemoglobin.

Possible causes of anemia include:
* Certain drugs
* Diseases such as cancer, ulcerative colitis or rheumatoid arthritis
* Genes (some forms of anemia such as thalassemia, may be inherited)
* RenalInsuficiencia renal insufficiency
* Blood loss (for example, heavy periods or estomacalesúlceras stomach ulcers)
* Poor diet
* Pregnancy
* Problems with the bone marrow, such as lymphoma, leukemia or multiple myeloma
* Problems with the immune system that causes destruction of blood cells (hemolytic anemia)
* Surgery of the stomach or intestines, which reduces the absorption of iron, vitamin B12 or folic acid

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