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ScienceDaily_2013 11582.txt

#Meta-analysis: Bug and weed killers, solvents may increase risk of Parkinsons diseasea large analysis of more than 100 studies from around the world shows that exposure to pesticides or bug and weed killers and solvents is associated likely with a higher risk of developing Parkinson's disease. The research appears in the May 28 2013 print issue of Neurology the medical journal of the American Academy of Neurology. Due to this association there was also a link between farming or country living and developing Parkinson's in some of the studies said study author Emanuele Cereda MD Phd with the IRCCS University Hospital San Matteo Foundation in Pavia Italy. The research was conducted also by Gianni Pezzoli MD with the Parkinson Institute--ICP Milan. For the analysis researchers reviewed 104 studies that looked at exposure to weed fungus rodent or bug killers and solvents and the risk of developing Parkinson's disease. Studies that evaluated the proximity of exposure such as country living work occupation and well water drinking were included also. The research found that exposure to bug or weed killers and solvents increased the risk of developing Parkinson's disease by 33 to 80 percent. In controlled studies exposure to the weed killer paraquat or the fungicides maneb and mancozeb was associated with two times the risk of developing the disease. We didn't study whether the type of exposure such as whether the compound was inhaled or absorbed through the skin and the method of application such as spraying or mixing affected Parkinson's risk said Cereda. However our study suggests that the risk increases in a dose response manner as the length of exposure to these chemicals increases. The study was supported by the Grigioni Foundation for Parkinson's disease and the IRCCS University Hospital San Matteo Foundation. Story Source: The above story is provided based on materials by American Academy of Neurology (AAN. Note: Materials may be edited for content and length. Journal Reference c

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