Demi Moore's Bloodsucking Beauty Treatment

One of Hollywood's great mysteries is how Demi Moore looks at least a decade younger than her 45 years. Is it Botox? Restylane? Marriage to 16-years-younger Ashton Kutcher? Nope -- and if you're squeamish, stop reading now -- it's bloodsucking leeches!

Demi was on "The Late Show with David Letterman" to promote her aptly named new movie, "Flawless." She dished in squirm-inducing detail that she'd just had leech therapy in Austria as part of a cleansing regimen.

"I'm feeling very detoxified right now," she declared, describing how the leeches crawled into her belly button. "You feel it bite down on you, and you want to go, 'You bastard!' And then you relax. You watch it swell up, and when it's super-drunk on your blood it kind of rolls over, like it's stumbling out of the bar." She laughed. "They have a little enzyme that gets released into your blood, and your health is optimized."

Sound primitive? It is. Leeching has been used medicinally for thousands of years -- and it's even approved by the FDA for healing skin grafts and in reattachment surgery.

Demi told Dave, "These aren't just swamp leeches, they're highly trained medical leeches -- we're talking high-level bloodsuckers!" After 20-plus years in Hollywood, she knows high-level bloodsuckers when she sees 'em!

But maybe the whole younger-man thing is a factor too. Demi was just gushing to "Extra" about Ashton's hot underwear pix in V Man magazine. "But I don't need to see the picture," she said. "I get to see it every day!"

Mmm, yeah. As far as youth tonics go, we'll take sexy scenery over a little blood sacrifice any time.

Would you let leeches suck your blood?