These big, beautiful women are known as ‘gainers’, and they’re becoming more and more popular with the men who admire them and pay to watch them eat. This programme explores the relationship these women have with their bodies and the food they eat, and reveals what motivates them to this sexual lifestyle.

Kitt is 21 years old and weighs 20 stone. She was a tomboy when she was growing up, and always admired fat women. Her boyfriend Wes gains sexual pleasure from her gaining weight, so he regularly feeds her and rubs her belly. Kitt knows this isn’t normal, but feels it’s better to embrace her sexual preferences than repress them.

Patty used to be the the queen of the gaining world, weighing 44 stone. She is now too heavy to walk unaided, is virtually immobile, and she requires 24/7 care from her son. She still performs ‘squashings’ for paying punters, where she sits and bounces on them.

My Big Fat Fetish examines how the women ended up in this bizarre industry, and why so many fans are willing to pay money to watch women ‘gaining’ online.

My Big Fat Fetish wil be broadcast from Tuesday, 5 February at 21:00 on BBC Knowledge, channel 184 on DStv.