Cannabis is considered to be a safe medication. Research shows cannabis has less addiction potential than caffeine, tobacco, and alcohol. However, frequent or long-term cannabis abuse can lead to increased tolerance, dependence, and the potential of withdrawal during discontinuation of use.
Users under the age of 25 and individuals with certain mental health diagnoses have been shown to be at a higher risk for cannabis addiction.
Information from Health Canada is available here.
Information from the Public Health Agency of Canada is available here.