is Parkinson’s disease contagious

Question: is Parkinson's disease contagious
- Keywords:
  contagious,
  disease,
  parkinson's
Asked by roxy rider to Matt on 13 Jun 2016.
- Matt Dunn answered on 13 Jun 2016:
  
  Hi Roxy,
  
  Short answer: no
  
  Long answer: Scientists don’t fully understand what causes Parkinsons, so it may be possible that there is an agent that can spread between people, but 50 years of data all points towards Parkinson’s being internal, with cells in the brain failing not due to outside agents like bacteria or viruses, but due to something else. I spend a lot of time with Parkinson’s patients and I am in no danger of getting Parkinson’s from them.

Question: is Parkinson's disease contagious