Cannabis research is increasingly contradictory, leaving clinicians in a difficult position. While some studies suggest potential benefits, others highlight significant mental health risks. In this evolving landscape, certainty can be misleading.

In the span of a single week, I encountered three very different narratives about cannabis.

One suggested that cannabis-infused beverages may help people reduce their alcohol consumption. Another questioned whether cannabis provides any meaningful benefit for mental health conditions. A third drew a connection between cannabis use disorder and increased rates of psychiatric diagnoses, particularly among younger populations.

All of these came from credible sources. All of them pointed in different directions.

This is the current state of cannabis research. It is not settled. It is not clean. It is not something clinicians can afford to simplify.

And yet, that is exactly what is happening in many clinical conversations.

The Problem with Certainty in an Uncertain Evidence Base

Cannabis has moved rapidly from taboo to normalized, and in some cases, to something approaching a wellness product. This shift has outpaced the science. As a result, clinicians are often left navigating a fragmented and evolving evidence base while clients are absorbing simplified, often polarized messaging from media, peers, and industry.

Some clients walk in convinced cannabis is medicine. Others fear it is inherently harmful. Many hold both beliefs at the same time.

The danger is not in clients having these beliefs. The danger is in clinicians responding with certainty when the evidence itself does not justify it.

What the Research Actually Suggests

If we slow down and look across the landscape, a more complicated picture emerges.

There is emerging research suggesting that cannabis, particularly in alternative forms like beverages, may play a role in reducing alcohol consumption for some individuals. That does not mean it is an effective treatment for alcohol use disorder. It means that substitution effects may exist under certain conditions for certain people.

At the same time, other research continues to challenge the idea that cannabis improves mental health outcomes. Some studies suggest minimal benefit for anxiety or depression. Others indicate that cannabis use may worsen symptoms over time, particularly when use becomes frequent or heavy.

More concerning are findings linking cannabis use disorder with increased rates of psychiatric diagnoses, including mood disorders and psychotic disorders. The direction of this relationship is complex. Cannabis may contribute to the onset or worsening of symptoms, particularly in vulnerable individuals. It may also be used as a form of self-medication by individuals already experiencing distress.

Both can be true.

That is where the discomfort lies. The data does not give us a simple answer, and it likely will not anytime soon.

Why This Matters for Clients with SUD and Co-Occurring Disorders

For clients with substance use disorders, cannabis does not exist in a vacuum.

Substitution narratives can be appealing. A client reducing alcohol use by switching to cannabis may experience short-term benefits. Less intoxication, fewer immediate consequences, and a sense of progress. But without careful assessment, this can become a lateral move rather than a recovery-oriented one.

For clients with anxiety, depression, or trauma-related symptoms, cannabis may provide temporary relief. It can reduce distress in the moment. It can help with sleep. It can create a sense of distance from overwhelming thoughts.

But relief is not the same as treatment.

Over time, reliance on cannabis can reinforce avoidance patterns, reduce emotional processing, and in some cases, exacerbate underlying symptoms. For individuals with a predisposition to psychosis, the risks are even more significant.

This is not a reason to shame or prohibit. It is a reason to approach the conversation with precision.

The Role of the Clinician: Curiosity Over Certainty

Clinicians do not need to have a definitive stance on cannabis to be effective. In fact, adopting a fixed position may undermine the therapeutic process.

What is required instead is a stance of informed curiosity.

This means asking better questions: How is cannabis functioning in this person’s life? What does it help with? What does it cost? What patterns are emerging over time? What happens when use increases? What happens when it decreases?

It also means being transparent about the limits of the research. Clients are capable of holding complexity when we model it. Saying that the evidence is mixed is not a weakness. It is an honest reflection of reality.

Most importantly, it means grounding the conversation in the individual, not the substance alone. Two clients can use cannabis in similar ways and have completely different outcomes. One may stabilize. Another may destabilize.

The difference is not just the substance. It is the person, their history, their biology, and the context of their use.

Moving Forward Without Oversimplifying

Cannabis is not going away. The research will continue to evolve, and likely continue to contradict itself in meaningful ways for years to come.

The goal is not to resolve the contradiction. The goal is to practice responsibly within it.

That requires humility. It requires staying current without overinterpreting new findings. It requires resisting the pull toward clean narratives in a field that is anything but clean.

Most of all, it requires remembering that our role is not to tell clients what to think about cannabis. Our role is to help them understand their own relationship with it, in the context of their broader goals, risks, and recovery.