Everyday choices are made about the food we eat by all 8 billion people on the planet. These choices impact our health and the health of the environment and climate. But what drives us to make the decisions we do and what would need to be done to change our decision making to improve both our health and reduce the environmental impact of food production.  I recently caught up with Prof. Barbara Mullan from Curtin University to discuss these issues. Most of us know that many of the things we eat will likely have detrimental effects on our health, yet despite this knowledge we continue our poor diets and the incidence of metabolic disease continues to increase. Even the broad evidence that metabolic disease increased our susceptibility to severe Covid did little to change behaviour. In our conversation Prof. Mullan explores the social, cultural, educational, and economic drivers behind this decision making and also the nuances of human behaviour.