“There is a concern that cannabis use is an important barrier to reducing Aboriginal and Torres Strait Islander smoking.

We investigate the associations of cannabis use and tobacco smoking and quitting in two large national samples.

We did not find consistent evidence in this setting that cannabis use is an obstacle to quitting tobacco smoking.”

https://www.ncbi.nlm.nih.gov/pubmed/28868760

http://onlinelibrary.wiley.com/doi/10.1111/dar.12609/abstract