The potential adverse effects such as the dependence syndrome, impaired adolescent psychosocial development and mental health, and increased risk of motor vehicle crashes are well recognised.
In contrast the potential for habitual cannabis smoking to cause adverse respiratory effects is less well recognised, in part because there has been less research undertaken in this field. In some respects this is surprising, as the usual way to take cannabis is by smoking, and it is known that cannabis smoke contains many of the same constituents as tobacco smoke, including higher levels of some carcinogens.
