subject: Medical Genealogy [print this page] It can be interesting, as well as sometimes vital, to build a family health tree. The best place to begin is with your family ask about medical conditions they and their nearest relatives might have. Once this source has been exhausted, you can seek through older family records, to find out what people became ill with and what they died of. When compiling the medical family tree, make sure that cousins, brothers, sisters, aunts and uncles are included, not just your parents and children. To make the tree especially valuable, try to compile information for at least four generations. Once you have pinned down any family tendencies to disease, make sure your physician is appraised of this, he or she may well want to start running tests on you right away.