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Catherine Zeta-Jones is taking care of personal business.
The Side Effects star has checked herself into treatment for her bipolar disorder, calling it a preemptive step to ensure that she continues to be in good health, a rep for Zeta-Jones confirmed Monday to E! News.
"Catherine has proactively checked into a health care facility," her camp said in a statement. "Previously Catherine has said that she is committed to periodic care in order to manage her health in an optimum manner."