Understanding Anemia Caused by Blood Loss: Symptoms & Causes

Anemia secondary to blood loss, also known as iron-deficiency anemia, occurs when the body does not have enough healthy red blood cells. One type of anemia is caused by low levels of iron — an essential mineral needed to make hemoglobin, which carries oxygen in the blood. Without enough iron, the body can't produce enough hemoglobin and red blood cells are unable to effectively carry oxygen.