NEW YORK - MAY 04: Actors Ashton Kutcher and Demi Moore attend the 2010 TIME 100 Gala at the Time Warner Center on May 4, 2010 in New York City. (Photo by Charles Eshelman/WireImage)
With his wife now 47 and already the mother of three daughters with ex-husband Bruce Willis, the bigger question might be if Demi will be able to – but Ashton is in no rush.
"I think my wife is a genetic freak," he told ABC's "Nightline" on Thursday night. "I'm not worried."
Asked if they do intend to try for a baby, Ashton said, "I don't know. It's, I don't know."
Though Demi seemingly hasn't aged a day – or gained a pound – since bursting into the Hollywood scene in films such as "St. Elmo's Fire" and "Ghost," Ashton said she's not starving herself.
"What do you mean, does she eat?" he said in response to Cynthia McFadden's question. "Of course she eats!"
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