We have evolved a complex, flexible system of metabolism, crucial to energy, weight management and a healthy lifespan. And now research is increasingly illuminating how our personal genetics can powerfully influence these pathways. In this presentation, Emma will explore some key mechanisms that impact how efficiently we metabolise certain nutrients for cellular energy. Should we burn fats or carbs? Who benefits most from ketogenic diets? Is fasting best? Can we really slow down the ageing process? How much of this is locked into our genes, and to what degree can we influence it with diet and lifestyle changes?