Here are important questions to ask your blood relatives. (If you know of any specific diseases or illnesses in your family, ask about them, too. (If you know of any specific diseases or illnesses in your family, ask about them, too. (Knowing this can help because some heritable diseases occur more often in certain population groups. Also, different diets and living environments can influence the risks of developing certain diseases. (Knowing this can help because some heritable diseases occur more often in certain population groups. Also, different diets and living environments can influence the risks of developing certain diseases. 
What is (are) Creating a Family Health History ?