How Does Marijuana Help Parkinson’s?
According to the Parkinson’s Foundation, the disease stems from the loss of dopamine-producing neurons in the brain’s basal ganglia – the area that helps control movement. This dopamine deficiency leads to hallmark symptoms like tremors, stiffness, and balance issues.
Cannabis compounds like THC and CBD interact with the brain’s endocannabinoid system, which plays a key role in regulating dopamine. One 2019 study explains:
Within the endocannabinoid system, cannabis appears to work by primarily targeting the CB1 receptor, which influences movement, mood, and inflammation. According to the journal Parkinson’s Disease:
Research also shows that cannabis can reduce neuroinflammation – a key contributor to Parkinson’s progression.
That said, most patients and physicians still rely on trial-and-error to find the right cannabis regimen – not because marijuana isn’t effective, but because research is still catching up.
Patient Experiences
Cannabis use among older adults increased ten-fold between 2003 and 2014, according to a recent study. But how are Parkinson’s patients specifically using it?
In a 2020 study, nearly 25% of over 1,000 Parkinson’s patients had used cannabis in the last six months – 10 times the national average for adults over 65. Two-thirds reported symptom relief as their primary reason for use. Patients cited improvements in both motor (tremor, stiffness) and non-motor symptoms (anxiety, pain, sleep). Over 30% reported significant relief, and most found no interference with their prescription medications.
A 2022 study surveyed nearly 1,900 individuals with Parkinson’s. Over 70% reported using cannabis for symptom relief – most commonly once a day. Patients were split nearly evenly between THC-dominant products (26%) and CBD-dominant ones (30%).
The result? More than half experienced mild improvements in pain, sleep, anxiety, and agitation. Those using over 50 mg of THC or over 200 mg of CBD reported the biggest gains in issues like constipation, cognition, and balance.
Interestingly, patients who used mostly THC saw the most improvement in tremors, anxiety, and depression. However, this group also experienced the widest range of effects – both positive and negative – though adverse reactions were mild and only 1% of patients stopped cannabis use due to side effects.
Crucially, cannabis reduced the need for prescription medications in some patients: 26.8% for pain, 18.6% for anxiety, and 13.9% for Parkinsonism, among others.
In a 2017 survey, Parkinson’s patients rated their satisfaction with cannabis therapy at 6.4 out of 7. Nearly 60% reported reducing their prescription drug use. A survey from Colorado found that those who used marijuana rated it among their most effective therapies, despite the state’s then-new legalization.
Lastly, in a survey of 2,700+ seniors using medical marijuana, 93.7% reported symptom improvement. Cannabis also cut reported pain levels by more than half.
Marijuana & Parkinson’s Studies
In a small 2014 study, patients who smoked marijuana experienced significant improvement in tremors, rigidity, and slowness of movement ( within just 30 minutes!). Sleep and pain scores improved as well.
Another Israeli study confirmed similar results: cannabis enhanced motor function and decreased pain, particularly in the body’s most affected areas.
A larger observational study published in Clinical Neuropharmacology followed 47 Parkinson’s patients for 19 months. Smoking 0.9 grams of cannabis flower daily led to fewer falls, better sleep, and improved mood – with no major side effects.
However, even as patient use grows, access to reliable information remains limited. A 2020 study found that most Parkinson’s patients learned about cannabis from the internet, friends, or dispensary staff – not their doctors. Many didn’t know the product type, THC/CBD ratio, or optimal dosage.
Physician surveys reveal a similar gap. A Parkinson’s Foundation report noted that while 95% of neurologists had been asked about medical marijuana, only 23% had any formal training and just 10% had recommended cannabis to Parkinson’s patients.
Future Research
One company, GB Sciences, is at the forefront of pharmaceutical cannabis development. Their pre-clinical research found that cannabinoid-rich formulas restored Parkinson’s-like behavior in mice “back to baseline” with negligible side effects. In collaboration with Canada’s National Research Council, GB Sciences also adopted a zebrafish model to more accurately replicate human Parkinson’s pathology – accelerating future clinical trial timelines.
Parkinson’s Medical Marijuana Doctors
Cannabis isn’t a cure for Parkinson’s disease – but it may offer a safer, more comprehensive alternative to traditional medications. Studies show that medical marijuana may improve both motor and non-motor symptoms, while reducing reliance on pharmaceuticals that often cause dyskinesia, a common drug-related side effect.
To find out if medical marijuana is right for you, contact a qualified CannaMD physician today.