14.5.2  Long-term effects of cannabis

Long-term frequent cannabis use leads to lack of motivation and poor performance at work or in school compared to individuals who do not consume this drug. People with cannabis use problems often appear tired and seem to not care about what happens in their life, have no desire to work regularly, and have a lack of concern about the way they look. In people who have a genetic vulnerability to psychosis, using high doses of cannabis for a prolonged period may act as a trigger to induce psychotic episodes (see Study Session 13).