We certainly, in low-risk cannabis, use guidelines. One key point there is to have a non-smoked or non-vaped form of cannabis, because there's growing evidence that even vaping produces ultrafine particulates, which are then inhaled, and which, as I said in my remarks, are the likely cause of the growing evidence that there's a substantive cardiovascular risk from vaping. Ideally we would, for both cannabis and the delivery of nicotine, have non-smoked or non-vaped methods as the preferred way of delivery.
On February 26th, 2018. See this statement in context.