You might be able to prevent repeat episodes of some types of anemia, especially those caused by lack of iron or vitamins. Dietary changes or supplements can prevent these types of anemia from occurring again.
Treating anemia's underlying cause may prevent the condition (or prevent repeat episodes). For example, if medicine is causing your anemia, your doctor may prescribe another type of medicine.
To prevent anemia from getting worse, tell your doctor about all of your signs and symptoms. Talk with your doctor about the tests you may need and follow your treatment plan.
You can't prevent some types of inherited anemia, such as sickle cell anemia. If you have an inherited anemia, talk with your doctor about treatment and ongoing care.