John Core is an award-winning Culinary Nutrition Lead at Sodexo and the author of Nutrition for Normal People. With a career spanning professional kitchens, large-scale contract catering, and high-impact public health campaigns, John champions practical, real-world nutrition that supports everyday people in making sustainable changes to their diet and lifestyle.

At Sodexo, John leads the integration of culinary nutrition across corporate and healthcare settings, designing food-first interventions that improve the health of Ireland’s predominantly sedentary workforce. His approach combines scientific rigour with culinary creativity, equipping chefs with the tools to deliver nutrient-dense, appealing meals that align with client wellness goals.

Beyond the workplace, John works with schools, community groups, and individuals, using gut health as an accessible entry point to explore the wider pillars of wellbeing. His philosophy emphasises flavour, familiarity, and food literacy—empowering people to eat well without restriction or complexity.