The foods you eat affect your gene expression. I'm pretty sure that's been proven. I also believe that DNA does not stay the same our whole lives. I think it changes along with ourselves and our environments. It records every experience, and functions as the unconscious mind. A certain amount of our DNA is like the blueprint for the body, and the rest, the "junk", maybe that is the blueprint for our psychology. Meditators always say that true happiness lies within, as do the answers and spiritual guidance that we need. We contemplate and meditate and answer our own questions. Maybe that process, on the unconscious, physical level, connects the unconscious information in our DNA, with the higher levels of consciousness in our minds. Or maybe not, but it's fun to think about.