Det kan bero på om de undersöker ditt urin eller hårstrå.
"Jag var så chockad att... det var som min mage frös till is, min hjärna också."
Marc Lewis, a former drug addict and current neuroscientist, says the medical model of treating addiction needs to be challenged.
According to research, about 25 percent of adults who are treated for alcohol and substance abuse also have ADHD.
In a country where 14 percent of teens are addicted to electronic media, an emerging rehab industry is finding new ways to reintroduce people to the real world.
Ex-soviet soldier turned self-proclaimed saviour, "Crocodile Gennadiy", is the subject of a new documentary. We talked to its director, Steve Hoover.
Could weed really help you kick a meth habit, or is it just a matter of replacing one vice with another?