You talked about the areas of the brain affected by cannabinoids and by cannabis; areas that govern our learning and the management of rewards and motivate behaviour, that are engaged in those functions of decision-making, habit formation, and motor function. Those things are developing in adolescence. When we talk about a genetic expression, I mean, genes are turned on and off by external factors in many cases.
Are you aware of the impact of maternal smoking or picking it up in the home—there's a lot of talk about second-hand smoke in other capacities—where there's marijuana in use and the kids are growing up in that environment? In your research, are you aware of any connections between maternal smoking or environment affecting the kids growing up in that environment?