Exploring the wonder of decent poo

Jeff Leach is co-founder of the American Gut Project which is creating a database of gut microbes from faecal samples posted to him from all over the world.

The Good Sh*t TV series follows a group of overweight young women taking part in a trial using faecal matter from other people to help lose weight.

PhD student Thilini Jayasinghe hand crafts pooh pills from faecal microbes. She's closest to the dirty work involved in developing the therapy.

Jeff Leach says the research into faecal transplants is still early stage. He appears in The Good Sh*t on TV on Tuesdays and online.