Sex is the secret of my youth, says actress Cameron Diaz

Charlie's Angels star Cameron Diaz has revealed that sex is one of the reasons for her youthful appearance and is happy with the way she looks.

"I don't want to look 25 again," contactmusic.com quoted the star of There's Something About Mary as saying.

"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," the actress said.

The 37-year-old Hollywood star is reportedly dating baseball star Alex 'A-Rod' Rodriguez.