Factors that increase your risk of thalassemia include:

  • Family history of thalassemia. Thalassemia is passed from parents to children through mutated hemoglobin genes. If you have a family history of thalassemia, you may have an increased risk of the condition.
  • Certain ancestry. Thalassemia occurs most often in people of Italian, Greek, Middle Eastern, Asian and African ancestry.
Jan. 02, 2014