Ayshea Buksh has slid through sewers and cared for cockroaches - to learn more about mankind.

Brighton-based Ayshea worked as a researcher on the Channel 4 series Anatomy Of Disgust, which starts tomorrow. She travelled all over the world to find the most repulsive locations for the series, which examines disgust.

She said: "The main thrust is trying to work out whether it is nature or nurture that makes us recoil from certain things.

"Something in us stops us from eating a rotten piece of meat - disgust helps to protect us from harm."

Ayshea, 25, noticed cultural differences in what people found disgusting. "In a Japanese restaurant we got people to eat sea slugs and chicken gizzards and they didn't bat an eyelid.

"But you can't sneeze on the Japanese metro without people looking at you in revulsion."