Health Risks of Smoking Have Significantly Increased Over the Past Two Decades
In recent years, there has been a significant increase in the THC content of cannabis strains across Europe and beyond. According to a study based on data from Canada, Europe, and the United Nations, the average THC content in marijuana in Germany is currently around 14%, and this figure has risen by 40% between 2010 and 2019.
This trend towards high-THC cannabis strains has been driven by advances in cultivation technology, such as the use of LED grow lights that optimise plant yields and cannabinoid content. This increase in potency, however, has raised concerns about a higher risk of psychosis associated with cannabis use.
Recent examples highlight the increase in THC levels. The Bananaconda strain, for instance, has a THC content of 31-32%, which is very high compared to historical averages, with very low CBD (~0.3%) that normally helps moderate THC effects. Similarly, the Sour Diesel strain, popular for its potency, has a THC level of around 22%, much higher than typical strains sold 20 years ago which often had THC levels below 10-15%.
Research indicates that higher THC concentrations, especially in strains with low CBD, are associated with an increased risk of acute psychotic symptoms and potentially longer-term psychotic disorders. Epidemiological data show that heavier use of high-THC cannabis correlates with a greater incidence of psychotic episodes, particularly among adolescents and young adults.
Lower CBD levels in many modern strains may also reduce the natural protective effect CBD has against some of THC’s adverse psychiatric effects. This is a concern as CBD is known to counteract some of the psychoactive effects of THC.
In summary, the modern trend toward high-THC cannabis strains has enhanced potency but also heightened concerns about psychosis risk, especially for frequent or early cannabis users with genetic or environmental vulnerabilities. The substantial rise in THC levels over the last two decades thus has important public health implications.
While the provided sources do not detail large-scale longitudinal data linking THC content increase directly to psychosis risk over 20 years, a recent study from Ontario found that those who have already developed a cannabis-induced psychosis have a 242 times higher risk of later developing schizophrenia. This underscores the need for continued research and awareness about the potential risks associated with high-THC cannabis use.
It is important to note that complete abstinence from cannabis can alleviate existing symptoms of psychosis. Antipsychotic medication is often helpful in managing symptoms of cannabis-induced psychosis. Talk and behavioural therapies can also help avoid relapse and resist the urge for cannabis use.
Sources: - ntv.de - hny - Canadian Medical Association Journal - University of Ottawa
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- Given the escalating THC content in modern cannabis strains, such as the Bananaconda with a THC level of 31-32%, there is a growing awareness for the potential links between high-THC cannabis use and increased risk of psychosis, particularly in adolescents and young adults.
- The rise in the average THC content in marijuana, from traditional strains of around 10-15% THC to currently around 14% in Germany, combined with lower CBD levels in many modern strains, raises concerns about mental health and long-term psychotic disorders as highlighted by research and epidemiological data.
