Navigation Links
Lead Exposure May Contribute to ADHD

Two studies report higher levels in kids with symptoms

TUESDAY, Feb. 2 (HealthDay News) -- Lead may play a role in the development of attention-deficit hyperactivity disorder (ADHD), new research suggests.

Genes are believed to account for as much as 70 percent of ADHD in children. Researchers trying to determine the cause of the other 30 percent of cases consider lead a prime suspect among possible environmental causes, according to the American Association of Psychological Science.

Lead, a neurotoxin, is present in trace amounts in such things as soil, drinking water, children's costume jewelry and imported candies. Nearly all children in the United States have measurable levels of lead in their bodies, the association reports.

In one of two recent studies examining the possible link between lead and ADHD, the researchers found that children with ADHD had slightly higher levels of lead in their blood than did children without ADHD. The second study showed an association between elevated levels of lead in children's blood and parent/teacher ratings of ADHD symptoms, including both hyperactivity and attention problems.

In both studies, the link between lead and ADHD was independent of the children's IQ, family income, race or whether their mothers had smoked during pregnancy.

The findings strongly suggest that lead may be a cause of ADHD, according to Joel Nigg, a psychological scientist at Oregon Health & Science University. He said that lead might disrupt brain activity in a way that leads to hyperactivity and attention problems.

The studies are published in the February issue of the journal Current Directions in Psychological Science.

More information

The U.S. National Institute of Mental Health has more about ADHD.

-- Robert Preidt

SOURCE: Association for Psychological Science, news release, Jan. 28, 2010

Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Acting Surgeon General Announces National Initiatives to Protect Children by Reducing Exposure to Secondhand Smoke
2. Penn School of Medicine receives $2.3 million to study biomarkers of cigarette smoke exposure
3. Teamsters Applaud Passage of Legislation to Protect Workers From Diacetyl Exposure
4. R rating might be unlikely to affect teens exposure to smoking in movies
5. Occupational exposures may be linked to death from autoimmune disease
6. Low Lead Exposures Can Hurt Kidneys
7. Exposure to sunlight may decrease risk of advanced breast cancer by half
8. Firing clay in unvented kilns may be a source of exposure to dioxins
9. VIDEO from Medialink and EcoQuest: New Technology Reduces Exposure to MRSA Staph
10. Fetal Exposure to Arsenic Affects Genes
11. Westaim reduces ABCP exposure
Post Your Comments:
(Date:6/27/2016)... ... June 27, 2016 , ... ... payment industry today announced its strategic partnership with Connance, a healthcare industry ... The two companies’ proven, proprietary technology combine to provide health systems, hospitals ...
(Date:6/27/2016)... ... 27, 2016 , ... recently awarded their highest five-star rating to Best ... individuals in the United States and Canada wear eyeglasses. Once considered to be a ... and make a fashion statement. Even celebrities use glasses as a way of creating ...
(Date:6/26/2016)... Michigan (PRWEB) , ... June 26, 2016 , ... On ... as sponsor of the 2016 Cereal Festival and World’s Longest Breakfast Table in Battle ... honor of the city’s history as home to some of the world’s leading providers ...
(Date:6/26/2016)... ... 2016 , ... PawPaws brand pet supplements owned by Whole Health ... the health of felines. The formula is all-natural and is made from Chinese herbs ... Cat Kidney Support Supplement Soft Chews are Astragalus Root Extract and Rehmannia ...
(Date:6/26/2016)... ... June 26, 2016 , ... ... they have been diagnosed with endometriosis. These women need a treatment plan to ... a comprehensive approach that can help for preservation of fertility and ultimately achieving ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... -- VMS Rehab Systems, Inc. ( ) reported today ... to build a strong and stable market for trading ... the OTC Markets-pink current trading platform. Explains ... seeing an anomaly in market trading activities that may ... Company, but shareholders and market players as well. I ...
(Date:6/24/2016)... Mass. , June 24, 2016   ... Spaulding Rehabilitation Network,s Dean Center for Tick ... Physical Medicine and Rehabilitation, MIT Hacking Medicine, University ... for Innovation, today announced the five finalists of ... for Lyme disease.  More than 100 scientists, clinicians, ...
(Date:6/24/2016)... and SAN CLEMENTE, Calif. , June ... -based mobile pulmonary function testing company, is now able to ... devices developed by ndd Medical Technologies , Inc. ... done in hospital-based labs.  Thanks to ndd,s EasyOne PRO ® , ... , can get any needed testing done in the comfort of ...
Breaking Medicine Technology: