Case Comprehensive Cancer Center's Stan Gerson discusses concerns about vaping, obesity despite positive trend in cancer rates

The US cancer rate just had its biggest-ever 1-year drop, and it's because of improved cancer research

Insider: Stan Gerson, director of the Case Comprehensive Cancer Center and the National Center for Regenerative Medicine, said we should still be concerned about vaping and obesity—two factors that could reverse a positive trend in cancer rates.