When anxiety begins to overtake her, biology student Deena Walker begins to worry she'll end up just like her mentally ill sister.
Deena Walker is a postdoctoral fellow at Mt. Sinai School of Medicine where she studies the molecular mechanisms of addiction and depression. She recently moved to New York after finishing her PhD at The University of Texas at Austin in December 2012. When she's not in lab she enjoys practicing yoga and playing fetch with her dog in Central Park.
This story originally aired on March 17, 2014.
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