Instead of Parkinson's Disease becoming progressively more common as was assumed, the
incidence of Parkinson's Disease, which is the rate at which people are newly diagnosed, has
been found to be continuously declining.
The incidence of Parkinson's disease and Parkinsonism were assessed by comparing data
from 1990 until 2010, at 1990, 2000 and 2010. All factors were accounted for.
The incidence of Parkinson's Disease in 2000 was found to be
only 55% of what it was in 1990. The incidence of
Parkinson's Disease in 2010 was found to be only 39% of
what it was in 1990. The findings showed that the incidence
of Parkinsonism in general, and of Parkinson's Disease in
particular, decreased substantially between 1990 and 2011,
and is continuously declining.
These findings can not indicate that the methods of treating Parkinson's Disease and
Parkinsonism have improved because there was already a substantial decline at the point of
diagnosis.
Reference : American Journal of Epidemiology [2016] Apr 29 [Epub ahead of print] (S.K.
Darweesh, P.J.Koudstaal, B.H.Stricker, A.Hofman, M.A.Ikram)
Complete abstract : http://www.ncbi.nlm.nih.gov/pubmed/27188952
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http://www.viartis.net/parkinsons.disease/news/160524.pdf
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