Cameron Diaz's Sex Life Keeps Her Young & Beautiful!

Cameron Diaz knows the secret to looking young, and it doesn't involve botox or lipo. The actress attributes her good looks and youthful glow to... sex!

"I don't want to look 25 again," the 37-year-old actress tells British Vogue in the July issue."The fountain of youth for me, let's see...I guess it's exercise, healthy diet, lots of water, lots of laughter, lots of sex — yes, sex, we need that as human beings. It's healthy, it's natural, it's what we are here to do!"

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Cameron also admits that she has not dabbled in plastic surgery, yet.

"But we'll see. So far, so good. But I'll never say never to anything."

Cameron recently reunited with ex Justin Timberlake to co-star in the flim Bad Teacher together.

In the comedy, Cameron plays "a very, very bad gold digger" who is looking to fund her boob job.

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"I'm having the best time playing her," she says of her character who "doesn't give a s*** about anyone but herself. I'm sure we'll offend everyone with it, which is great."

Cameron is gearing up for the most recent blockbuster she completed, Knight and Day opposite Tom Cruise.

When asked about her off-screen love interest, Yankees superstar Alex Rodriguez, Cameron remained tight-lipped.

So is she in love?

"You know what? Yes I am. I'm in love with life," the actress answers.