Anemia is a condition in which the body does not have enough healthy red blood cells. It results in a decreased ability to carry oxygen to the body's tissues, leading to fatigue, weakness, and other symptoms. The three general causes of anemia are blood loss, decreased red blood cell production, and increased red blood cell destruction.
1. Blood Loss: Blood loss is the most common cause of anemia, and it can be due to a number of different factors. This includes things like heavy menstrual bleeding, gastrointestinal bleeding, or surgery. Blood loss can also occur due to trauma, such as an injury or a serious accident.
2. Decreased Red Blood Cell Production: The body produces red blood cells in the bone marrow, but sometimes something interferes with this process. This can be due to a lack of certain vitamins and minerals in the diet, such as iron, folate, and vitamin B12. It can also be caused by certain medical conditions, such as kidney disease, or a genetic disorder.
3. Increased Red Blood Cell Destruction: Red blood cells can be destroyed faster than they are produced, which can lead to anemia. This can occur due to a number of different factors, such as certain infections, autoimmune diseases, and some medications. It can also be caused by certain inherited conditions, such as sickle cell anemia.