Demi received the treatment as part of a 'cleanse' while visiting Austria

"It crawls in and you feel it bite down on you and you want to go. Then you relax and work on your breathing just to kind of relax.

"You watch it swell up on your blood, watching it get fatter and fatter - then when it's super drunk on your blood it just kind of rolls over like it's stumbling out of the bar."

Miss Moore explained how she prepared herself for the leeches. "You have to do a turpentine bath first - that's part of the therapy," she said.