What is ultra-processed food? And do we really know what it’s doing to our bodies, our health, and the planet? Chris van Tulleken is a doctor and TV presenter who says most of the food that we eat isn’t really food. “Whether you're eating a burger, or a piece of fried chicken, or a breakfast cereal, there are illusions of texture. There will be little crunches and pops and snaps and greasy bits and dry bits and chewy bits. But it's all inhalably fast-to-eat and the hormones that tell you to stop just can't keep up.” His latest book, ‘Ultra-Processed People’, explores how ultra-processed food is designed to fuel addiction and is creating an epidemic of diet-related disease.  Today, Chris joins Krishnan Guru-Murthy on Ways to Change the World to discuss the dangers of a UPF diet, and why urgent government regulation is needed. Produced by Annie La Vespa, Freya Pickford and Alice Wagstaffe.