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Mental Health

Cannabis and Tobacco Use Linked to Higher Psychosis Risk

Chris Hayward 24.05.2026

A Deadly Combination?

Researchers in the US have discovered that using cannabis and tobacco together significantly increases the likelihood of developing psychosis. The study focused on young people and found a substantial rise in psychosis risk among those who used both substances.

The research highlights the importance of addressing combined substance use in youth mental health services. By examining the habits of young people, the study sheds light on the potential risks associated with using cannabis and tobacco together.

Heavy cannabis use paired with even light tobacco use was found to triple the risk of psychosis. This alarming finding strengthens the argument for integrated substance-use prevention in mental health services. The study's results suggest that the combined use of cannabis and tobacco may have a more significant impact on mental health than previously thought.

Can We Mitigate the Risks?

The researchers' findings have significant implications for public health policy and the way mental health services are delivered. By understanding the risks associated with combined substance use, healthcare professionals can develop more effective strategies for prevention and treatment.

The study's results emphasize the need for a comprehensive approach to addressing substance use in young people. By tackling the issue head-on, mental health services can help reduce the risk of psychosis and other related mental health problems.

The consequences of failing to address combined substance use could be severe, with potentially long-lasting impacts on young people's mental health. As such, it is crucial that healthcare professionals and policymakers take a proactive approach to mitigating the risks associated with cannabis and tobacco use.

Frequently Asked Questions

What is the main risk associated with using cannabis and tobacco together? Using cannabis and tobacco together significantly increases the risk of developing psychosis, with heavy cannabis use and light tobacco use tripling the risk.

How can mental health services address the issue of combined substance use? Mental health services can address the issue by implementing integrated substance-use prevention strategies, providing young people with the support and resources they need to make informed choices.

What are the implications of the study's findings for public health policy? The study's findings highlight the need for a comprehensive approach to addressing substance use in young people, with a focus on prevention and early intervention.

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