You may be familiar with a range of tips for living a healthy life: Watch your weight, exercise, eat nutritious food and don’t smoke, for example. What if you could combine these lifestyle factors with a host of other variables to learn your risk of developing specific diseases, to help catch and treat them early or prevent them altogether? Victor Ortega, M.D., Ph.D., associate director for the Mayo Clinic Center for Individualized Medicine in Arizona, explains how science is drawing ever closer to making such personal health forecasts possible.