Avatar star Zoe Saldana decided to keep her recent marriage secret in a bid to protect her personal life and "maintain some kind of sanity" in Hollywood.

The actress tied the knot with Italian artist Marco Perego in London over the summer (13), but she only recently confirmed the news.

Saldana has now revealed she chose to keep her wedding out of the headlines and deliberately refuses to answer questions about her new husband in a bid to keep the relationship private.

She tells America's Ocean Drive magazine, "Come on! What does that (my personal life) have to do with acting?... I love what I do so much, but I love my (personal) life more. And I realised throughout the years of being in this business that the only way to maintain some kind of sanity is to protect that which is most dear to you, which is your life and everyone that's in it...

"(Acting) provides a sanity that gives me the ability to be insane by playing other people and living in other bodies for a long period of time, and then coming back home and knowing that my roots are so grounded that it's easy for me to go back to being myself. The only way I can continue having that is by absolutely avoiding the questions that are asked."