Sometimes addiction is easy to spot. But if it happens in your family, what do you do? When and how should you step in?
For more, Farai Chideya talks with a specialist and two people whose lives were touched by addiction.
Dr. Henry Gregory directs the Rafiki Consortium, which offers training to public and private agencies on dealing with mental health issues.
We also hear from "Charlotte," whose brother experienced an intervention led by Dr. Gregory, and "Michael" — a recovering heroin addict.