Cameron Diaz gave very X-rated explanation for why she still looks so young

Cameron Diaz provided an extremely X-rated explanation as to why she still looks so young, and she didn't hold back on her reasoning.

Christmas is just a matter of weeks away, guys - which can only mean one thing, time to binge-watch all of those Christmas movie classics.

And if you plan on watching The Holiday, then you'll have Diaz taking over your screens as the actor plays a key role in the festive flick.

Having released in 2006, the Nancy Meyers-direct rom-com is regarded by many as one of the best Christmas films out there, with many suggesting Diaz looks just as good now compared to nearly 20 years ago.

Cameron Diaz starred in The Holiday (2006) (Presley Ann/Getty Images for Fortune's Most Powerful Women Summit)

The actor is now 52, not that anyone would guess it - and Diaz herself has spoken out about why she continues to look so young.

In an 2010 interview with British Vogue while she was in her 30s, the Shrek star revealed that she did not 'want to look 25 again', but did say she has a few tricks up her sleeve to try and slow down the ageing process.

"The fountain of youth [for me], let's see…," she began, before launching into a list of fairly common tips.

"I guess it's exercise, healthy diet, lots of water, lots of laughter," Diaz continued.

However, the star then offered up one more X-rated suggestion for staying youthful, saying: "Lots of sex - yes, sex, we need that as human beings."

Diaz didn't clarify exactly how much sex she considered to be 'lots' but added: "It's healthy, it's natural, it's what we are here to do!"

Many think Diaz hasn't aged (20th Century Fox)

While Diaz seemed to offer up the sex suggestion in a jokey manner, there does actually appear to be some truth to her claim.

In 2021, holistic dermatologist Keira Barr told Mind Body Green that the estrogen production that comes through sex 'increases collagen production, skin thickness, and hyaluronic acid production, giving skin a youthful and supple appearance'.

In fact, one study cited by Planned Parenthood found that of 3,500 men and women, those who had sex three times a week, appeared seven to 12 years younger than their actual age.

So while Diaz seemed to have it all worked out at the time, she admitted that she would 'never say never' to potentially having work done in the future.

"I'm not doing anything right now," she said of cosmetic surgery, adding: "But we'll see. So far, so good. But I'll never say never to anything."