Greens powders are made up of dozens of ingredients, which are ground up and added to water. They claim to do all sorts of things for our bodies, like give us extra energy, clearer skin, boost our gut health and reduce bloating. But they're not cheap. So what's in them and do they work? That's what listener Sofie, whose social feeds have been bombarded with adverts for greens powders, wants to know. She's not alone - we've had lots of messages asking us to look into these products. To get some answers, Greg speaks to British Dietetic Association spokeswoman Sian Porter, and food scientist Dr Emily Leeming.

The prices of the products were correct at the time of the recording.

PRESENTER: GREG FOOT PRODUCER: TOM MOSELEY