New PubMed Insights on Cannabis and Chronic Pain

What the Latest Peer‑Reviewed Studies Tell Us

Recent research indexed in PubMed offers a clearer picture of how medical cannabis relates to chronic pain. While the evidence is still developing, these studies help patients and clinicians understand potential benefits, risks, and expectations. Each study below is summarized in plain language and linked to its PubMed record.

1. Sickle Cell Disease and Cannabis Use

A 2025 review in Expert Opinion on Investigational Drugs examined reports of cannabinoid use among adults with sickle cell disease. Researchers gathered clinical observations and early trials to assess whether cannabis might alleviate pain and improve quality of life for this population. The authors noted that while some patients reported relief, the evidence remains preliminary and emphasizes the need for larger, controlled studies.

2. Clinician Guidance in a Changing Legal Landscape

A 2025 article in Primary Care discussed how expanding legalization is influencing clinician decision‑making for patients with chronic pain. The authors highlighted that clinicians face limited, inconsistent evidence and must balance potential benefits with known risks such as psychosis, cannabinoid hyperemesis syndrome, and cannabis use disorder. They recommend thorough screening, monitoring, and education to support safe use.

3. Cannabis Use Among Hemodialysis Patients

In a 2025 study published in Kidney360, researchers analyzed data from the HOPE Consortium Trial to understand cannabis use patterns in people on maintenance hemodialysis who experience chronic pain. Findings indicated that legalization may increase cannabis use in this group, but the study also identified factors associated with higher usage, such as pain severity and prior opioid use. The authors cautioned that more research is needed to determine safety and effectiveness in this vulnerable population.

4. Measuring Pain Expectations About Cannabis

A 2025 study in The Journal of Pain developed the Cannabis Pain Expectancies Scale (CPES), a tool to assess what patients believe cannabis will do for their pain. Researchers created and tested an initial set of 32 items, finding the scale reliable for future research. This tool can help clinicians understand patient attitudes and potentially predict usage patterns.

5. Cannabis Oil for Parkinson’s Non‑Motor Symptoms

A 2025 randomized controlled trial in Movement Disorders evaluated an oral cannabis extract containing cannabidiol (CBD) and a low dose of THC for pain and other non‑motor symptoms in Parkinson’s disease patients. Over nine weeks, participants received a daily dose of approximately 44 mg CBD and 1 mg THC. The study reported that the treatment was generally safe and some patients experienced reductions in pain and fatigue, though the sample size was small and the results require confirmation in larger trials.

6. Risk Screening for Veterans Using Medical Cannabis

In 2025, a study in Substance Use & Misuse examined the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) among U.S. military veterans who use cannabis for medical reasons and are on long‑term opioid therapy. Researchers sought to determine a moderate‑risk cutoff appropriate for this group. The findings suggest that existing cutoffs may not accurately reflect risk in medically using veterans, indicating a need for tailored screening tools.

Key Takeaways for Patients

• Evidence is growing but remains limited; many studies are small or observational.
• Safety signals exist, especially concerning drug interactions and potential for dependence.
• Patient expectations and beliefs about pain relief can influence usage patterns.
• Veterans and patients with chronic kidney or neurological conditions may have unique considerations.

These studies illustrate that medical cannabis is an emerging area of research. While some patients report pain relief, the data do not confirm definitive outcomes. Patients should discuss medical cannabis with a licensed healthcare provider to consider personal health history, potential interactions, and appropriate monitoring.

For more information on how to talk with your physician about medical cannabis, contact Compassionate Alternative Care, a Florida‑based, veteran‑owned concierge service that supports patients through the medical‑marijuana card process.