In February 2005, police responded to a report of Ms. Menendez becoming "violent toward her family, " the official said, adding that the police report said Ms. Menendez hadn't taken medication for her bipolar disorder for five months.

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He says that existing drugs for depression, schizophrenia and bipolar disorder aren't powerful enough to help many patients.

FORBES

To fully answer this question, researchers would have to study many high-risk children from birth and try different types of interventions to see what did and didn't protect against the development of bipolar disorder.

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