From NPR News

Doctors, patients and insurers have been struggling with how to determine who should be treated for hepatitis C now that effective but wildly expensive drugs can all but cure the disease. Treating prison inmates is a good investment that would save money in the long run, a study finds.

A look at the brain's wiring can often reveal whether a person has trouble staying focused, and even whether he or she has attention deficit hyperactivity disorder, known as ADHD.

A team led by researchers at Yale University reports that they were able to identify many children and adolescents with ADHD by studying data on the strength of certain connections in their brains.

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Copyright 2015 NPR. To see more, visit