Understanding Parkinson’s
What the disease is and what is known about it: causes, the signs that come first, how it is diagnosed, and how it moves.
Why does Parkinson's make you lose your sense of smell, and how early does it start?
While smell loss occurs early in up to 90 per cent of Parkinson's cases, it does not track disease progression post-diagnosis, and clinical screening remains hampered by high study bias and conflicting brain-imaging data.
What are the earliest signs of Parkinson's, years before a tremor?
While non-motor symptoms like smell loss, sleep disorders, and constipation can predate Parkinson's by decades, they are too common to serve as reliable standalone predictors, and no current therapy can stop the disease's progression.
Does coffee protect against Parkinson's?
While drinking coffee is linked to a lower risk of getting Parkinson's, clinical trials show that caffeine tablets fail to improve motor symptoms, do not slow disease progression, and may slightly worsen cognition.
Does acting out your dreams mean you will get Parkinson's?
Acting out dreams is strongly linked to future brain conditions, but clinical trials show that a Parkinson's diagnosis is not inevitable, diagnostic methods are often weak, and no current therapies can stop or delay the disease.
Do pesticides cause Parkinson's?
While some population studies show a statistical link between occupational pesticide exposure and Parkinson's disease, the evidence is weakened by recall errors, publication bias, and a complete lack of post-diagnosis progression data.
How long do people live with Parkinson's?
Search this question and you get confident numbers that disagree with each other. The largest review of the evidence explains why — and the explanation is more useful than any single figure.
Is Parkinson's hereditary?
Family history is the single strongest known risk factor for Parkinson's. It is also, for most people, a small absolute risk. Both of those are true, and the gap between them is where most of the confusion lives.
What comes before Parkinson's, and how many years before
The usual article gives you ten early signs as a checklist. One study followed people through the years before diagnosis and put the signs in order — which is a more useful thing to know, and a more unsettling one.