Recent scientific studies (both clinical and experimental) clearly show that long-term cannabis smoking has a very harmful effect on our psyche. Symptoms observed in patients include:

• memory problems
• impaired concentration
• difficulty concentrating
• inability to integrate and select information.

It has also been shown that patients who use this drug regularly have the onset of psychosis. They are up to three times more likely to develop psychosis than people who have never smoked. Psychosis is a very serious illness that leads not only to hallucinations or delusions, but also to suicide attempts or self-mutilation.