Television physician Dr Chris van Tulleken explores the wild world of food engineering. Plus: the Dune galaxy comes to TV. Here’s what to watch this evening

9pm, BBC Two
Whether it’s feeding ice-cream to a person having a brain scan to find the “happiest” flavour, or using sound engineers to perfect the refreshing hiss of a can of fizzy pop being opened (“sonic branding”), there’s a lot of engineering that goes into making food addictive. In this fascinating if alarming documentary, medical doctor and academic Dr Chris van Tulleken speaks to industry insiders who lift the lid on the harmful tricks of manufacturers. Hollie Richardson