The following modules, organized into three main parts, are offered as a web-based self-help intervention (study arms one and two): Furthermore, a glossary that explains the terms, definitions, and concepts used in the intervention, information about the history of cannabis use, the short-, medium- and long-term effects of cannabis, the physical risks of cannabis (COPD, lung cancer, cardio-vascular, etc.), co-occurring mental health problems (depression, psychosis, ADHD, etc.), and harm reduction techniques for the use of cannabis with recommendations (these recommendations favor oral intake and are based on the recommendations for medical cannabis use ) will be provided in an appendix accessible after login, along with frequently asked questions and their corresponding answers.
The additional two chat counseling sessions in study arm one will apply support regarding behavioral change according to MI, discuss the modules of the web-based self-help part based on MI and CBT, review the development of the consumption diary and will be structured as follows: The web-based self-help intervention and the subsequent tailored chat counseling aim to reduce cannabis use.
To the best of our knowledge, this will be the first randomized controlled trial to test the effectiveness of online self-help therapy in combination or without chat counseling in reducing or enabling the abstention from cannabis use.
The Australian program “Reduce Your Use: How to Break the Cannabis Habit” ).
This program was tested for effectiveness in a randomized-controlled trial and compared to a psycho-educative control condition also consisting of 6 modules. The frequency of cannabis use and the quantity of cannabis consumed were both more reduced in the intervention group than in the control group at 6 weeks and at the 3-month follow up.
In European countries, including Switzerland, as well as in many states worldwide, cannabis is the most widely used psychoactive substance after alcohol and tobacco.
Although approximately one in ten users develop serious problems of dependency, only a minority attends outpatient addiction counseling centers.