Are tobacco and cannabis economic substitutes or complements? New research suggests it changes with age
- Written by Ranjodh B. Singh, Senior Lecturer, Curtin University

It’s no secret that many different drugs, whether illicit or regulated and legal, are often consumed together or share a similar group of users.
But the way people consume drugs together can vary, both with changes in their price and across different age groups.
Our recent research, published in the Journal of Population...