Michael Douglas has admitted that it was not easy for Catherine Zeta Jones to admit she was depressed.
The Hollywood legend told Oprah Winfrey that he was proud of his wife, who has been suffering from bipolar disorder.
Michael, 66, said on Oprah's US chat show: "I said, 'I've got my oldest son in federal prison. My ex-wife is suing me, and I've got cancer'.
"It's kind of hard for the wife to say, 'I'm depressed'. I think that probably played a big part of it. She's got to be stoic and deal with all the stuff that I'm going through."
The star added: "I think she's relieved that she has a better understanding [of the disorder].
"I'm so proud of her for kind of analysing, taking care of it and getting some help."
Catherine was checked into rehab after helping husband Michael battle throat cancer.
The Oscar-winning actress, mother to son Dylan, 10, and daughter Carys, eight, was treated at the Silver Hill psychiatric hospital in New Canaan, Connecticut, in the US.