Your family medical history, sometimes called a medical family tree, is a record of illnesses and medical conditions affecting your family members. Here's why a family medical history can come in handy — and how to create one of your own.
You inherit half of your genetic profile from each parent. Along with the genetic information that determines your appearance, you also inherit genes that might cause or increase your risk of certain medical conditions. On the other hand, you might have a family history that indicates you are at a lower risk for certain conditions. A family medical history can reveal the history of disease in your family and help you to identify patterns that might be relevant to your own health.
Your doctor might use your family medical history to:
A family medical history can't predict your future health. It only provides information about risk. Other factors — such as your diet, weight, exercise routine and exposure to environmental factors — also affect your risk of developing certain diseases.
Your family might want to work together to develop a family medical history. Consider kicking off the project at a family gathering, such as a holiday or reunion. Keep in mind, however, that some loved ones might be uncomfortable disclosing personal medical information.
The U.S. Surgeon General has created a computerized tool called My Family Health Portrait to help you create a family medical history. Or, you can compile your family's health history on your computer or in a paper file.
If information about a disease or cause of death is unknown, don't guess at the answer. An incorrect guess can result in a poor interpretation of your medical history. Don't worry if some details are missing.
If you're adopted, ask your adoptive parents if they received any medical information about your biological parents at the time of your adoption. Adoption agencies also might have family medical information on file. If you were adopted through an open adoption process, you might be able to discuss your family's medical history directly with members of your biological family.
If possible, your family medical history should include at least three generations. Compile information about your grandparents, parents, uncles, aunts, siblings, cousins, children, nieces, nephews and grandchildren. For each person, try to gather the following information:
Pay special attention to conditions that develop earlier than usual, such as high blood pressure in early adulthood, or conditions that affect multiple relatives.
Include information about where your mother's and your father's family members came from — for example, Germany, Africa, China and so on. This information can be helpful because some health problems occur more often in specific ethnic groups.
If you encounter reluctance from your family, consider these strategies:
You might want to consult family documents, such as existing family trees, baby books, old letters, obituaries or records from places of worship. Public records — birth certificates, marriage licenses and death certificates — are usually available in county record offices. If you or your family members maintain electronic personal health records, use them.
Give your doctor a copy of your family medical history and ask him or her to review it with you. Your doctor might ask you questions for clarification and can help you interpret the relevance of certain patterns in your medical history, including the need for preventive measures or screening tests.
As children are born and family members develop illnesses, update your family medical history. Share relevant updates with your doctor. It might take time and effort, but this tool can help improve the health of your family for generations to come.