Demi Moore recently used blood-sucking leeches to "cleanse" and "detoxify," she said during an appearance Monday on “The Late Show With David Letterman.”

“I’ve always been somebody looking for the cutting edge of things that are for optimizing your health and healing, so just a week ago I was in Austria doing a cleanse and part of the treatment was leech therapy,” she told Letterman.

“These aren’t just swamp leeches, these are highly trained medical leeches,” she said. “These are not just some low-level scavengers; we’re talking high-level blood-suckers.”

Moore said they tested a leech on her belly button before putting several others on different areas of her body. She also said the worms are a fan of a certain type of grooming.

“Leeches don’t like hair, they much prefer a Brazilian,” she said.

Moore said she came away from the treatment feeling good.

“It detoxifies your blood,” she told Letterman. “And they have a little enzyme that when they’re biting down on you, gets released into your blood and generally you bleed for quite a bit. And your health is optimized. It detoxified the blood and I’m feeling detoxified right now.”