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Genetic testing is being used more frequently to help physicians prescribe medications that will prove most effective based on an individual patient's genetic makeup.

Imagine trying to deal with a disease that can cause you to hear voices in your head, that disrupts your thinking and ability to function. That's what people with schizophrenia face on a daily basis. The mental illness afflicts more than 2 million adults in the United States.

  NOTE: This show originally ran on June 17, 2014.