Jessica Lahey wondered how to keep kids from developing addictions to drugs and alcohol. She thought about it in her job as an educator at an inpatient drug and alcohol rehab for adolescents. She also pondered this as a parent and an alcoholic. Lahey knows that preventing substance abuse isn't cut and dry. In her new book, The Addiction Inoculation, she explores substance abuse risks and what parents need to know to keep their children safe.