Medicinal Cannabis for Anxiety & Depression: Does It Help?

As more people turn to cannabis to help manage stress, anxiety, or depression, the question remains: does it really help, or could it do more harm than good?

A new study¹ published in the Journal of Affective Disorders — “Acute and chronic effects of medicinal cannabis use on anxiety and depression in a prospective cohort of patients new to cannabis” — provides valuable insight.  Led by Feingold, Levine, and Rehm, the study tracked patients newly prescribed medicinal cannabis, looking at how their anxiety and depression symptoms changed both immediately and over three months.

Promisingly, the study found significant decreases in anxiety and depression from baseline; it also highlighted important cautions about dosing, impairment, and the need for controlled trials to understand better who benefits most and who might face unintended consequences.

How This Study Examined Cannabis and Mental Health

Unlike surveys or lab-based trials, this research employed Ecological Momentary Assessment (EMA), a method in which patients regularly report their symptoms in real-time as they go about their daily lives.

The study included patients who were new to medicinal cannabis and using it for various health conditions, not just mood disorders.  They were asked to rate their anxiety and depression symptoms both immediately after using cannabis and periodically over a three-month period.

This approach offers a more realistic view of how cannabis works in daily life and how its effects may evolve with continued use.

Key Findings on Cannabis for Anxiety and Depression

The results showed that patients experienced statistically significant decreases in anxiety and depression symptoms from their starting levels.  Same-day relief was especially notable: people often reported feeling calmer and less depressed shortly after using cannabis.

Unsurprisingly, at higher doses, many patients also reported feeling impaired or “high,” which could affect daily functioning.  While the overall trend was positive, the authors did note that more rigorous trials are needed to understand exactly how cannabis should be used for mental health support.

Potential Benefits: How Cannabis Might Support Mental Health

The idea that cannabis can help ease anxiety and depression is not new.  Compounds in cannabis, mainly THC and CBD, interact with the body’s endocannabinoid system, which helps regulate mood, stress, and emotional responses.  Some people may benefit from cannabis’s ability to:

• Reduce acute feelings of anxiety: By influencing neurotransmitters like dopamine and serotonin, THC and CBD can provide a calming effect for some users.
• Improve mood in the short term: Many patients report feeling more positive and less overwhelmed after responsible use.
• Offer an alternative when other treatments fail: For people who experience side effects or limited relief from conventional medications, cannabis may be worth exploring under medical supervision.

This latest study’s findings strengthen the case further that medicinal cannabis has the potential to help certain patients manage anxiety and depression symptoms, at least over the short to medium term.

Potential Drawbacks: Risks and Considerations

While the improvements reported are encouraging, the researchers also point out that cannabis is not without risks.  Some of the key cautions include:

• Impairment at higher doses: Feeling “high” may be fine for some, but it can interfere with daily activities, work, or safe driving.
• Potential for dependence: Regular use can lead to tolerance, which means patients may need higher doses for the same effect, increasing risks.
• Unknown long-term impact: This study focused on the first three months of use.  What happens over the years is still unclear, especially for patients with pre-existing mental health conditions.
• Lack of dosing guidelines: Different strains, THC/CBD ratios, and delivery methods can produce vastly different effects, making it hard to find the right balance without medical guidance.

These drawbacks underline why the authors stress the need for controlled clinical trials to define better the safest, most effective ways to use cannabis as a mental health tool.

Final Thoughts: An Evolving Conversation

This research is just the latest to add another piece to the larger conversation about cannabis and mental health. There is real promise, but it would be foolish to think this comes without certain limitations and questions that have yet to be answered.

For some patients, medicinal cannabis may offer meaningful relief from anxiety and depression symptoms, especially when other options have fallen short or caused unwanted side effects.  Yet the potential for impairment, tolerance, or dependence means it should never be approached casually.

As more rigorous clinical trials build on this early real-world evidence, the hope is that more straightforward guidelines will emerge to help patients and clinicians decide when cannabis makes sense as part of a mental health treatment plan.

Studies Referenced:

^{1. Wolinsky, D., et al. (2025). Acute and chronic effects of medicinal cannabis use on anxiety and depression in a prospective cohort of patients new to cannabis. Journal of Affective Disorders, (S01650327). https://doi.org/10.1016/j.jad.2025.12716}