Featured Research

from universities, journals, and other organizations

Head injury and pesticide exposure leads to triple the risk of Parkinson’s disease

Date:
November 12, 2012
Source:
American Academy of Neurology (AAN)
Summary:
A new study shows that people who have had a head injury and have lived or worked near areas where the pesticide paraquat was used may be three times more likely to develop Parkinson’s disease.

A new study shows that people who have had a head injury and have lived or worked near areas where the pesticide paraquat was used may be three times more likely to develop Parkinson's disease. The study is published in the November 13, 2012, print issue of Neurology, the medical journal of the American Academy of Neurology. Paraquat is a herbicide commonly used on crops to control weeds. It can be deadly to humans and animals.

"While each of these two factors is associated with an increased risk of Parkinson's on their own, the combination is associated with greater risk than just adding the two factors together," said study author Beate Ritz, MD, PhD, of UCLA's Fielding School of Public Health. "This study suggests that the physiological process that is triggered by a head injury may increase brain cells' vulnerability to attacks from pesticides that can be toxic to the brain or the other way around, for example, chronic low dose exposure to pesticides may increase the risk of Parkinson's after a head injury."

The study involved 357 people with Parkinson's disease and 754 people without the disease, all of whom lived in an agricultural area in central California. The participants reported any head injuries they had ever received with a loss of consciousness for more than five minutes.

The researchers determined participants' exposure to the weed killer based on a 500-meter area around their home and work addresses, using a geographic information system (GIS) that combined data on paraquat use collected by the state of California's Pesticide Use Reporting system with land use maps.

People with Parkinson's disease were twice as likely to have had a head injury with loss of consciousness for more than five minutes as people who did not have the disease. Of the 357 people with Parkinson's disease, 42, or 12 percent, reported ever having had such a head injury, compared to 50 of the 754 people without the disease, or 7 percent.

People with Parkinson's disease were 36 percent more likely to have exposure to paraquat than those who did not have the disease. Of those with Parkinson's, 169 had exposure to the weed killer, or 47 percent, compared to 291 of those without the disease, or 39 percent.

The study was supported by the National Institute of Environmental Health Science, National Institute of Neurological Disorders and Stroke, National Institutes of Health and American Parkinson Disease Association.


Story Source:

The above story is based on materials provided by American Academy of Neurology (AAN). Note: Materials may be edited for content and length.


Journal Reference:

  1. Lee , Pei-Chen; Bordelon, Yvette; Bronstein, Jeff; Ritz, Beate. traumatic brain injury, paraquat exposure, and their relationship to parkinson disease. Neurology, 2012

Cite This Page:

American Academy of Neurology (AAN). "Head injury and pesticide exposure leads to triple the risk of Parkinson’s disease." ScienceDaily. ScienceDaily, 12 November 2012. <www.sciencedaily.com/releases/2012/11/121112171050.htm>.
American Academy of Neurology (AAN). (2012, November 12). Head injury and pesticide exposure leads to triple the risk of Parkinson’s disease. ScienceDaily. Retrieved April 16, 2014 from www.sciencedaily.com/releases/2012/11/121112171050.htm
American Academy of Neurology (AAN). "Head injury and pesticide exposure leads to triple the risk of Parkinson’s disease." ScienceDaily. www.sciencedaily.com/releases/2012/11/121112171050.htm (accessed April 16, 2014).

Share This



More Health & Medicine News

Wednesday, April 16, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Formerly Conjoined Twins Released From Dallas Hospital

Formerly Conjoined Twins Released From Dallas Hospital

Newsy (Apr. 16, 2014) Conjoined twins Emmett and Owen Ezell were separated by doctors in August. Now, nearly nine months later, they're being released from the hospital. Video provided by Newsy
Powered by NewsLook.com
Ebola Outbreak Now Linked To 121 Deaths

Ebola Outbreak Now Linked To 121 Deaths

Newsy (Apr. 15, 2014) The ebola virus outbreak in West Africa is now linked to 121 deaths. Health officials fear the virus will continue to spread in urban areas. Video provided by Newsy
Powered by NewsLook.com
Cognitive Function: Is It All Downhill From Age 24?

Cognitive Function: Is It All Downhill From Age 24?

Newsy (Apr. 15, 2014) A new study out of Canada says cognitive motor performance begins deteriorating around age 24. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins