You are what you eat—and what you eat may be encoded in your DNA. Studies have indicated that your genetics play a role in determining the foods you find delicious or disgusting. But exactly how big a role they play has been difficult to pin down. “Everything has a genetic component, even if it’s small,” says Joanne Cole, a geneticist and an assistant professor in the Department of Biomedical Informatics at the University of Colorado School of Medicine.