Could gambling be treated with a nasal spray?

Finnish researchers are studying whether a fast acting nasal spray be used by gamblers to kick their addiction. The spray contains naloxone, which is usually used in the emergency treatment of opiate overdoses. It works by blocking the production of dopamine, the neurotransmitter linked to pleasure with a central role in addictions. Kathryn talks with Professor of Addiction Medicine at the University of Helsinki, Hannu Alho.