Cannabis is the most widely used illicit drug, and yet how and why it is used remains a mystery to many of the people who have never smoked it.

This What & Why? publication is only available online, and gives parents, health professionals and others working with young people an insight into what cannabis is, why it's smoked, and the effects it has.
This What & Why? publication is only available online – click on 'read the book' to see it.