Testing additional family members is recommended. Each of your family members carries unique pieces of DNA that together can unlock your family’s story.
From a genealogical perspective, testing one or both of your parents will allow you to obtain additional information about your own DNA Matches. For example, you’ll be able to find whether each match is paternal or maternal. You will also discover additional relatives through matching to 100% of each of their DNA (instead of only the 50% you have inherited). Testing siblings, cousins, and other relatives is also very useful for discovering more relatives and for learning more about your own matches. Because genetic inheritance is random, your siblings may get different ethnicity results than yours, and it is fascinating and fun to compare your results.
From a health perspective, your results may provide you with valuable insights, and may also provide information that is relevant for other family members. Testing other family members can help clarify their genetic risk and can be useful in creating a more complete picture of your family’s health. In the future, testing more family members may better inform the genetic risk calculations of every individual in the family, but such functionality is not available in the initial release.
To learn more about this topic, read this article on the MyHeritage Knowledge Base:
Who Should Do a DNA Test?. On MyHeritage Knowledge Base, you'll find additional articles, webinars, and how-to videos that can help you master your genealogy skills.