University of Toronto PhD candidate Nanci Guest talks about her research on the effects of gene-nutrient interactions (nutrigenomics) on athletic performance. According to Nanci, much of how our body reacts to certain nutrients is due to our genetic composition. By understanding our individual genetic composition we can figure out what best to eat, when, how much and why. In this episode, she shares what she has learned in her research and tells some true stories of how she has seen athletes improve their performance based on their nutrigenomics.