Professor Tim Spector and GP Dr Kandi Ejiofor help viewers to navigate the world of ultra-processed foods (UPFs), that are thought to contribute to the UK's rising obesity rates. They begin by revealing how some of the nation's favourite ultra-processed foods are made, starting with strawberry milkshake, and investigating exactly what ultra-processed foods do to the body. Tim and Kandi also help Vicki and Rob from Scarborough tackle their instant-noodle addiction and show how making simple swaps and cooking easy recipes can benefit a person's health.