What is personalized medicine?

After researchers sequenced the human genome, they had a "map" of the human genes in DNA. This new genetic knowledge opens up the possibility of developing "targeted" therapies for people with specific gene sequences, and it can help physicians choose from among existing medicines the treatments that best meet individual genetic, lifestyle, and environmental differences.

In addition, researchers are developing genetic tests that can tell us if we are susceptible to certain types of cancer, atherosclerosis, stroke, osteoporosis, vision and hearing loss, or even cavities. The patient and physician can use this information to establish a program of health management, including monitoring, as well as lifestyle, nutrition or protective drug therapy.

This is really the ideal way to treat a person.  As a physician, you would identify the main health concerns of the patient and tailor the investigation and treatment to that patient's needs.  For example, if a person were at high risk to develop diabetes, then the physician could tailor treatment to include lifestyle changes and medicine to perhaps avoid the diabetes showing up. This is really important, because we know that in the diabetes case, for example, that a lot of the bad things that happen are still going to happen after the diagnosis is made no matter how good controlled you are.  If you could institute care that could avoid the disease or at least minimize it you could avoid those bad outcomes.