Anemia is often secondary to other diseases. However, not only the disease can cause anemia, but also a variety of congenital and acquired pathology of the body. The causes of anemia include:
1 Hemorrhage. This can be a great loss of blood due to trauma or surgery, or chronic blood loss, such as heavy menstruation in women, bleeding gastric ulcer or hemorrhoids.
2 Violations of the formation of red cells (RBCs) in the bone marrow. This occurs when the bone marrow function and is characterized by a decrease in the number of red blood cells depleted or total lack of them. Cessation of production of red blood cells eventually leads to death.
3 Increased sensitivity of erythrocytes. In the presence of certain pathologies of the bone marrow, red blood cells produced by them are very fragile and brittle, have a thin shell, and are extremely sensitive to the negative impact from the outside. These corpuscles are subject to rapid degradation, which entails a fall in the level of hemoglobin in the blood and, in fact, anemia.
4 Malnutrition. This may cause, for example, iron deficiency anemia, as people do not get enough iron and other essential nutrients and vitamins (eg, B 12) with food.
5 The limited capacity of the intestine for the absorption of iron.
Risk factors in conjunction with the infection, as well as diseases of the intestine, stomach and other organs contribute to the rapid progression of anemia.