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Cannabis for Chronic Pain: What the Research Says

Medical Use2025-06-04By BSF Team

An overview of how cannabis is used to manage chronic pain and what scientific studies reveal.

For millions of people living with chronic pain, daily life can feel like a never-ending battle. From aching joints and persistent back pain to the burning discomfort of neuropathy, chronic pain doesn’t just affect the body—it can take a toll on mental health, relationships, and overall quality of life. In recent years, as the opioid crisis has forced a rethinking of pain management strategies, many patients and doctors have turned their attention to an ancient remedy with a modern twist: cannabis.

The use of cannabis for pain relief isn’t new. Historical records show that people have used the plant for its analgesic properties for thousands of years, from ancient China to Victorian England. But it’s only in the last few decades that scientists have begun to unravel how cannabis works in the body, and what it might offer those struggling with chronic pain.

At the heart of cannabis’s pain-relieving potential are compounds called cannabinoids—most notably THC (tetrahydrocannabinol) and CBD (cannabidiol). These chemicals interact with the body’s endocannabinoid system, a network of receptors and signaling molecules that help regulate pain, mood, appetite, and more. When you consume cannabis, cannabinoids bind to receptors in the brain and nervous system, altering the way pain signals are processed and perceived.

But what does the research actually say? The answer, as with much in medicine, is complicated. Over the past decade, dozens of studies have explored the effects of cannabis and cannabinoids on various types of chronic pain, from arthritis and fibromyalgia to multiple sclerosis and cancer-related pain. The results are promising, but not always clear-cut.

A 2017 report from the National Academies of Sciences, Engineering, and Medicine concluded that there is “substantial evidence” that cannabis is effective for the treatment of chronic pain in adults. Other reviews have found that cannabinoids can reduce pain intensity, improve sleep, and enhance quality of life for some patients—especially those with neuropathic pain, a type of pain caused by nerve damage. In fact, several countries, including Canada and parts of Europe, have approved cannabis-based medicines for neuropathic pain.

However, not all studies are positive. Some clinical trials have found only modest benefits, and others have raised concerns about side effects like dizziness, dry mouth, and cognitive impairment. The placebo effect is also strong in pain research, making it difficult to tease out the true impact of cannabis. And because cannabis remains illegal at the federal level in many countries, large-scale, high-quality studies are still relatively rare.

Despite these challenges, many patients report significant relief with medical cannabis—sometimes after years of trying other treatments without success. Take, for example, the story of Linda, a 52-year-old teacher who developed chronic back pain after a car accident. After trying physical therapy, prescription painkillers, and even surgery, she found that a low-dose THC:CBD tincture allowed her to sleep through the night and return to her favorite hobby: gardening. “It doesn’t make the pain disappear,” she says, “but it makes it manageable. I feel like I have my life back.”

Doctors who specialize in pain management are increasingly open to discussing cannabis as an option, especially for patients who haven’t responded to conventional therapies. Dr. Michael Smith, a pain specialist in California, says he’s seen cannabis help patients reduce their reliance on opioids and other medications. “It’s not a miracle cure, but for some people, it can be a valuable part of a comprehensive pain management plan,” he explains. “The key is to start low, go slow, and work closely with a knowledgeable healthcare provider.”

Choosing the right cannabis product for pain can be daunting. There are countless strains, formulations, and delivery methods—smoking, vaping, edibles, tinctures, topicals, and more. Some patients find relief with high-THC products, while others prefer CBD-dominant options that don’t produce a “high.” Many experts recommend starting with a balanced THC:CBD ratio and adjusting based on individual response. It’s also important to consider potential interactions with other medications and to be aware of local laws and regulations.

One area of active research is the role of terpenes—aromatic compounds found in cannabis that may have their own therapeutic effects. For example, myrcene is thought to have sedative and muscle-relaxing properties, while beta-caryophyllene may help reduce inflammation. Some patients experiment with different strains to find the combination of cannabinoids and terpenes that works best for their unique pain profile.

Of course, cannabis isn’t for everyone. Some people experience side effects like anxiety, dizziness, or impaired memory, especially with high-THC products. Others may have medical conditions or take medications that make cannabis use risky. And while the stigma around medical cannabis is fading, it can still be a barrier for some patients and providers.

Looking ahead, the future of cannabis for chronic pain is bright but uncertain. As more states and countries legalize medical and adult-use cannabis, researchers will have greater opportunities to conduct rigorous studies and develop targeted therapies. In the meantime, patients and doctors must navigate a patchwork of laws, products, and evidence—often relying on trial and error to find what works.

If you’re considering cannabis for chronic pain, the most important step is to talk with your healthcare provider. They can help you weigh the potential benefits and risks, monitor for side effects, and ensure that cannabis is integrated safely into your overall treatment plan. Keep a journal of your symptoms, dosages, and experiences, and be patient—finding the right regimen can take time.

In summary, cannabis offers hope for many people living with chronic pain, but it’s not a one-size-fits-all solution. The science is evolving, and so is our understanding of how this ancient plant can fit into modern medicine. For now, the best approach is informed, cautious experimentation—guided by research, medical advice, and your own experience.