Catherine Zeta Jones Catherine Zeta Jones has checked into rehab, in an effort to overcome her bipolar II disorder.

The actress, 43, has admitted herself into a mental health treatment centre to complete a month long programme ‘in order to manage her health in an optimum manner’.

Catherine, who has two children with actor hubby Michael Douglas, 68, had previously sought help for her illness in 2011, but pals stress there’s nothing to worry about this time around.

‘There was no big problem,’ said one. ‘This was just a good time to do it. She is in between projects and this has always been part of the plan.’