How 23andMe uses its customers' test results

The Head of Therapeutics at 23andMe, Kenneth Hillan, explains how the company uses its customers' test and survey results to figure out which genes control different traits. In addition to selling test kits and analyzing results, 23andMe sells access to its customers' data to drug companies. Tune in on Monday May 11 at 10P ET to watch the premiere of "DNA Testing: The Promise and the Peril."