Parkinson’s Disease More Common in Northern Netherlands – Research Reveals
- De 'parkinsonkaart' van Nederland, ontwikkeld door de Universiteit Utrecht en het Radboudumc, brengt tot op buurtniveau in beeld waar nieuwe parkinsongevallen ontstaan.
- Neuroloog Bas Bloem van het Radboud Universitair Medisch Centrum in Nijmegen is blij met de nieuwe parkinsonregistratie in Nederland.
- De verzamelde gegevens zijn vervolgens op een kaart geplot, om te onderzoeken of er regionale patronen of opvallende verschillen zichtbaar zijn.
De ‘parkinsonkaart’ van Nederland, ontwikkeld door de Universiteit Utrecht en het Radboudumc, brengt tot op buurtniveau in beeld waar nieuwe parkinsongevallen ontstaan. Onderzoekers maken daarbij gebruik van meerdere databronnen, waaronder CBS-cijfers en gegevens van zorgverzekeraars.
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Neuroloog Bas Bloem van het Radboud Universitair Medisch Centrum in Nijmegen is blij met de nieuwe parkinsonregistratie in Nederland. “Die hadden we voorheen niet. voor kanker bestond zo’n registratie al wel”, zegt hij. “Met een slimme methode hebben we nu een algoritme ontwikkeld waarmee we alle nieuwe parkinsonpatiënten op een betrouwbare manier in kaart kunnen brengen.“
De verzamelde gegevens zijn vervolgens op een kaart geplot, om te onderzoeken of er regionale patronen of opvallende verschillen zichtbaar zijn.
meer Parkinson in het Noord-Nederland?
De bevindingen uit de parkinsonkaart laten zien dat parkinson in sommige regio’s vaker voorkomt dan in andere. “Dat verschil kun je eigenlijk alleen verklaren door omgevingsfactoren”, zegt Bloem. Volgens hem is er geen enkele dominante factor die de hogere aantallen parkinsongevallen in bepaalde gebieden volledig kan verklaren. “We zien een duidelijke Noord-Zuidverdeling, maar begrijpen nog niet goed waar die vandaan komt.”
Uit de kaart blijkt dat de
Parkinson’s disease and Smoking: A Complex Relationship
the claim that smoking is linked to a lower risk of Parkinson’s disease is a long-standing observation, but it is indeed a complex and frequently enough misunderstood correlation, and does not imply a protective effect. Current understanding emphasizes that any apparent reduction in Parkinson’s risk among smokers is likely due to factors related to the disease’s early, preclinical stages, and is overwhelmingly outweighed by the severe health risks of smoking.
Parkinson’s Disease: An Overview
Parkinson’s disease is a progressive neurodegenerative disorder that affects movement. It is caused by the loss of dopamine-producing neurons in the substantia nigra, a region of the brain controlling movement. Symptoms typically develop slowly, starting with tremors, rigidity, slow movement (bradykinesia), and postural instability. While the exact cause is unknown, genetic and environmental factors are believed to play a role.
The Inverse Correlation Between Smoking and Parkinson’s Disease
For decades, epidemiological studies have observed an inverse association between smoking and the incidence of parkinson’s disease. This means smokers appear to have a lower risk of developing the disease compared to non-smokers. A meta-analysis of 29 prospective studies published in Neurology in 2007 found that current smokers had a 60% lower risk of developing Parkinson’s disease than never-smokers.Though,this does not mean smoking prevents Parkinson’s.
Potential Explanations for the Correlation
Several hypotheses attempt to explain this correlation, but none are definitively proven.
* Reverse Causation: The most accepted explanation is “reverse causation.” This suggests that the early, preclinical stages of Parkinson’s disease may actually cause a decreased desire to smoke, or make it more challenging to continue smoking. Individuals in the very early stages of the disease may experience subtle motor or olfactory changes that lead them to lose interest in smoking. The Parkinson’s Foundation highlights this theory as the most likely explanation.
* MAO-B Inhibition: Nicotine and other compounds in tobacco smoke can inhibit monoamine oxidase B (MAO-B), an enzyme that breaks down dopamine. Though, MAO-B inhibitors used as Parkinson’s medications are far more selective and controlled than the exposure from smoking, and the benefits are outweighed by the harms of smoking.
* Genetic Predisposition: Some research suggests a genetic predisposition might play a role. Individuals with certain genetic variations that make them more susceptible to nicotine addiction might also have a lower risk of Parkinson’s.
Health Risks of Smoking Outweigh Any Potential Benefit
It is crucial to emphasize that the health risks associated with smoking – including cancer, heart disease, stroke, and respiratory illnesses – far outweigh any potential, and unproven, association with a reduced risk of Parkinson’s disease. The Centers for Disease Control and Prevention (CDC) reports that smoking causes more than 480,000 deaths each year in the United States.
Breaking News Check (2026/01/24 05:14:53)
As of January 24, 2026, there have been no significant breakthroughs altering the understanding of the smoking-Parkinson’s correlation. Research continues to focus on the underlying mechanisms and the role of reverse causation. Public health organizations continue to strongly advise against smoking. Recent studies continue to reinforce the reverse causation hypothesis, with research focusing on identifying biomarkers that could predict Parkinson’s risk before the onset of motor symptoms, possibly explaining the observed smoking patterns.