World Parkinson's Day 2026: A detailed look at medical cannabis and Parkinson’s disease

What is World Parkinson’s Day?  

World Parkinson’s Day is an awareness day created by Parkinson’s UK to commemorate James Parkinson’s birthday, the man who first recognised Parkinson’s disease as a medical condition in 1817. 

Each year, the charity offers patients and healthcare professionals a chance to come together to raise awareness of Parkinson’s disease, in much the same way as James Parkinson did all those years ago. 

Is World Parkinson’s Day different to Parkinson’s Awareness Month? 

While World Parkinson’s Day and Parkinson’s Awareness Month both take place during April, the events are led by two different organisations – one based in the US and the other in the UK. 

Organised by The Parkinson’s Foundation each year, Parkinson’s Awareness Month is an entire month that focuses on educating people about Parkinson’s disease in the US and advocates for further research into treatments. 

This year’s theme is focused on the theme of ‘Find Real Answers’, connecting people to reliable, science‑backed information while amplifying real-life PD experiences. Meanwhile, World Parkinson’s Day is led by the UK-based charity Parkinson’s UK, and takes place on April 11th each year, in honour of James Parkinson’s birthday.

What is Parkinson’s disease? 

One of the easiest ways to raise awareness is by doing exactly what you’re doing now: taking the time to learn more about the condition. So, what actually is Parkinson’s disease? 

Parkinson’s disease is a neurodegenerative disorder that’s estimated to affect approximately 8.5 million people around the world. 

While it may be well-recognised as a medical condition in today’s world, there is still a lot we don’t know about it, especially in terms of its root cause. 

Scientists are still unclear on exactly what causes Parkinson’s disease to develop in the first place. What we do know is that the condition is associated with the basal ganglia, otherwise known as the brain’s ‘movement centre’. 

When nerve cells in the basal ganglia become damaged, motor control and dopamine regulation are disrupted as well. This can lead to the development of issues with motor symptoms, such as: 

• bradykinesia (slowness of movement)

• stiffness

• tremors

• balance issues

• mental health concerns like anxiety and or depression 

Over time, these symptoms typically get progressively worse, leading to an overall decline in quality of life for those living with the condition. 

What impact does cannabis have on Parkinson’s disease? 

Cannabis contains compounds called cannabinoids, which interact with our body’s endocannabinoid system (ECS). This cell-signalling system is involved in many important functions, including our ability to regulate mood, sleep, pain, balance, memory and appetite.

Since cannabinoids like THC and CBD can interact with this system, researchers have long been interested in whether cannabis-based treatments may help alleviate some of the processes affected by Parkinson’s disease. This has led to growing interest in medical cannabis and the impact it may have on the symptoms often associated with the condition.

Parkinson’s disease and medical cannabis: what does clinical research tell us?

Research into medical cannabis for Parkinson’s disease is still developing, and while the evidence base is growing, it remains relatively limited in some areas. 

Despite this, many existing studies and patient-reported findings have highlighted several key areas where cannabis-based treatments may have potential, especially in terms of sleep, mental health and related motor symptoms. 

Let's have a closer look at these areas, one by one. 

The impact of medical cannabis on Parkinson’s disease symptoms

While the use of cannabinoids has been suggested to help with managing the symptoms of neurological conditions like Parkinson’s disease, the current pool of evidence is fairly varied. 

Some results have been positive, but further research involving more patients is needed to fully understand the impact that medical cannabis can have. 

That said, certain papers have found some potential benefits to taking medical cannabis for Parkinson’s disease. 

Back in 2020, 1,123 German patients with Parkinson’s disease were surveyed about their perspectives and experiences of taking cannabis. This revealed some interesting statistics: 

• 8.4% of the patients surveyed reported having tried cannabis-based treatments for Parkinson’s disease symptom management

• Only 51% of patients were aware that these options were legally available in the country

• Of the patients who had taken cannabis therapeutically, reductions in muscle cramps and pain were experienced in 40% of patients, with 20% noting an improvement in other symptoms like tremors, restless leg syndrome, akinesia, anxiety and depression

• The overall tolerability of medical cannabis for Parkinson’s disease was deemed to be ‘good’

• Improvement of symptoms was reported by 54% of users when applying oral CBD for Parkinson's disease, and 68% when inhaling THC-containing medical cannabis

A literature review published in the Journal of Parkinson’s Disease in 2022 revealed similar findings as well. 

While the paper found no compelling evidence to recommend medical cannabis for Parkinson’s disease patients, the researchers did identify a potential benefit towards its administration. This included its ability to alleviate symptoms like tremor, anxiety, pain, sleep quality and overall quality of life. 

Recent clinical evidence has made one thing particularly clear: patient interest in medical cannabis for Parkinson’s disease is on the rise. 

In fact, a recent study conducted in the Netherlands revealed that 13% of Parkinson’s disease patients are already taking cannabis alongside their conventional treatment plan. 

This correlates with the findings of a 2019 survey released by Parkinson’s UK on cannabis attitudes, which showed that 59% of patients would be open to trying medical cannabis to help manage their symptoms in the future. In other words, it looks like that finding has started coming true.  

The impact of medical cannabis on mental health

Parkinson’s disease is associated with numerous physical symptoms, but for many patients, the condition can lead to many mental health issues as well. 

 

So, what does research tell us about the impact of medical cannabis on issues like anxiety, depression and mood changes?

Back in 2021, a large-scale US survey explored the effects of medical cannabis on mental health. The results of this study found significant reductions in both anxiety and depression symptoms after treatment, when compared to a control group who did not take cannabis.

These findings have recently been supported by observational data from the UK Medical Cannabis Registry, which showed “statistically and clinically significant improvements in depression, anxiety, sleep quality, and health-related quality of life” when treating patients with depression with medical cannabis.

For people living with Parkinson’s disease, these findings may be particularly relevant. After all, anxiety and low mood can affect sleep, confidence, motivation and overall daily functioning. 

As such, medical cannabis may help some patients better manage the wider emotional and psychological impact of living with the condition.

The impact of medical cannabis on sleep

Sleep problems are incredibly common in people with Parkinson’s disease, with more than 75% of patients estimated to be affected. But it’s not just at nighttime that these issues can appear. 

As you’ll likely know yourself already, a poor night’s sleep will often bleed into the next day as well, impacting factors like our mood, ability to concentrate, energy levels and even mobility. 

So, what difference can taking medical cannabis have for people with Parkinson’s disease? 

While specific studies into Parkinson’s disease and sleep remain fairly limited, several areas of research show that medical cannabis may help alleviate sleep disorders like insomnia. 

For example, a 2022 study published in the Journal of Sleep Research reported an 80% improvement in sleep quality when administering medical cannabis oil to patients with clinical insomnia. In fact, 60% of the study’s participants were even said to no longer classify as clinical insomniacs by the end of the two-week trial period. 

In another study which did involve Parkinson's disease patients, over 20% of users reported that medical cannabis helped improve non-motor symptoms such as sleep disturbances. However, this didn’t look into sleeping disorders specifically, so further research is required to know for sure.

To learn more about the real-world impact of medical cannabis for neurological conditions, have a look at our recent article that broke down the results for neurological patients from the largest survey of active UK medical cannabis patients survey ever conducted. 

Real-life insights: how does medical cannabis impact quality of life for Parkinson’s disease patients?

Clinical research may be important, but real-life patient stories also offer valuable insights into the impact medical cannabis can have on the quality of life for Parkinson’s disease patients.

One of the best-known examples of this is Larry Smith, a former police captain whose experience taking medical cannabis for Parkinson’s symptom management went viral a few years back. 

After sharing a series of YouTube videos, Larry documented the visible difference that medical cannabis appeared to have on his tremors and mobility. 

His story later went on to become the subject of a documentary called ‘Ride With Larry’, which followed his 300-mile cycling journey around South Dakota, two decades after his diagnosis.

Stories like Larry’s resonate because they bring the conversation back to what matters most: everyday life.

For people living with Parkinson’s disease, treatment is not just about reducing symptoms on paper. It’s also about getting a better night’s sleep, moving more comfortably, feeling more emotionally stable and regaining a greater sense of independence.

While every patient’s experience will be different, first-hand stories like these help explain why the relationship between medical cannabis and Parkinson’s disease is such a big area of interest.

Keen to discover more stories like Larry’s? Our dedicated patient stories page features real-life insights on the impact of medical cannabis in managing various neurological conditions. 

FAQs about Parkinson’s disease and medical cannabis

If you’ve still got questions about the relationship between Parkinson’s disease and medical cannabis, we’ve got you covered. Here are some of the questions our team are asked about most often.

Can you get a medical cannabis prescription for Parkinson’s disease in the UK?

Yes, if you are deemed to be eligible, you can be prescribed medical cannabis as a treatment for Parkinson’s disease in the UK via a prescription from a private clinic, like Releaf. 

While medical cannabis is not prescribed by the NHS for Parkinson's disease, it has been legally available in the UK since 2018.  

To qualify, you must have an existing Parkinson’s disease diagnosis and have evidence of trying at least two conventional treatments beforehand. 

How close are we to curing Parkinson’s disease?

There is still no cure for Parkinson’s disease. That said, research is continuing all the time, and several promising areas are starting to emerge. 

From earlier diagnostics to more targeted symptom management approaches, advances are being continually researched to offer new therapies that can improve the quality of life for patients.

Why do people with Parkinson’s disease sometimes decline quickly?

Parkinson’s disease is a progressive disorder, which means that the symptoms it can cause tend to gradually worsen over time. However, some people experience this transition much more quickly, leading to a sudden decline. 

This can happen for many reasons, including disease progression, medication issues, infection, dehydration, malnutrition or other secondary health problems.

Cognitive changes, including Parkinson’s-related dementia or severe depression, can also have a significant effect.

This is why receiving tailored clinical support is so important, especially if you have concerns about when your symptoms may start to change.

How Releaf supports patients with Parkinson’s disease

At Releaf, our world-class clinical team of UK-based consultants is always on hand to assess whether medical cannabis could be a suitable treatment option for you. 

By looking at your symptoms, medical history and previous treatment experience, we can talk you through what the process involves and, where appropriate, offer a tailored plan to help manage your symptoms.

While medicines derived from cannabis may not suit all patients' health needs, they may offer meaningful relief for some people with Parkinson’s disease, particularly where conventional treatment options are unable to provide enough symptom control.

If you are eligible for medical cannabis and receive a Releaf prescription, you will be given access to a wide range of tools: 

• A bespoke, built-from-the-ground-up Patient Dashboard for handy appointment and prescription management

• Your very own medical cannabis card

• A specialist travel certificate

• Access to 24/7 legal support via Releaf Protect

To find out whether medical cannabis is a suitable option for your needs, try our medical cannabis eligibility checker. It’s free, takes less than 20 seconds, and could be the first step towards finding relief.

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