Some people, especially Diabetics, would be better off taking anti-oxidants as vitamin E, while others may get no effect or even be harmed. Personalized medicine is not only the wave of the future, it is available in some areas right now. Dr. Andrew Levy, MD, Ph.D., Professor at the Technion Institute of Technology and Medical School in Haifa, Israel, is the world expert on the test for a particular genetic marker that helps us sort out this interesting question. It is a simple blood test that your doctor doesn’t know about, but you should.