Navigation Links
Even minute levels of lead cause brain damage in children
Date:11/20/2007

Even very small amounts of lead in children's blood -- amounts well below the current federal standard -- are associated with reduced IQ scores, finds a new six-year Cornell study.

The study examined the effect of lead exposure on cognitive function in children whose blood-lead levels (BLLs) were below the Centers for Disease Control and Prevention (CDC) standard of 10 micrograms per deciliter (mcg/dl) -- about 100 parts per billion. The researchers compared children whose BLLs were between 0 and 5 mcg/dl with children in the 5-10 mcg/dl range.

"Even after taking into consideration family and environmental factors known to affect a child's cognitive performance, blood lead played a significant role in predicting nonverbal IQ scores," says Richard Canfield, a senior researcher in Cornell's Division of Nutritional Sciences and senior author of the study in the journal Environmental Health Perspectives. "We found that the average IQ scores of children with BLLs of only 5 to 10 mcg/dl were about 5 points lower than the IQ scores of children with BLLs less than 5 mcg/dl. This indicates an adverse effect on children who have a BLL substantially below the CDC standard, suggesting the need for more stringent regulations," he said.

In the United States over the last several months, nearly 50 specific products, including millions of toys for young children, have been recalled due to excessive lead in the paint, plastics and metal. "Our findings emphasize the very real dangers associated with low-level exposures, to which lead in toys can contribute," Canfield said.

U.S. children are exposed to lead primarily from household dust contaminated by deteriorating interior lead-based paint. In addition to toys, other potential sources include contaminated soil, imported food stored in lead-glazed pottery and certain plastic, metallic and painted products.

This most recent finding builds on the same research team's influential 2003 study, published in the New
'/>"/>

Contact: Press Relations Office
pressoffice@cornell.edu
607-255-6074
Cornell University Communications
Source:Eurekalert

2

GOOD

Page: 1 2

Related biology news :

1. New field-deployable biosensor detects avian influenza virus in minutes instead of days
2. Research cautions to catch-and-release in less than 4 minutes
3. Low levels of key protein may indicate pancreatic cancer risk
4. Gray whales a fraction of historic levels, genetic research says
5. Folic acid lowers blood arsenic levels, according to Mailman School of Public Health study
6. Study finds that even aloof husbands have lower testosterone levels than unmarried men
7. Folic acid lowers blood arsenic levels in Bangladesh
8. Wildfire drives carbon levels in northern forests
9. deCODE discovers cause of major subtype of glaucoma
10. Study begins to reveal clues to the cause and progression of sepsis
11. Bleeding, not inflammation, is major cause of early lung infection death
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/4/2009)UVALDE Dr. Daniel Leskovar, a Texas AgriLife Research plant physiologist at the Texas AgriLife Research and Extension Center in Uvalde, has been investigating ways to help vegetable plants make a les
(Date:12/4/2009)The electroencephalogram (EEG) is widely used by physicians and scientists to study brain function and to diagnose neurological disorders. However, it has remained largely unknown whether the electrod
(Date:12/3/2009)WALL, N.J., Dec. 3 BIO-key International, Inc. (OTC Bulletin Board: BKYI), a leader in wireless public safety and finger-based biometric identification solutions, announced that a majority of its sha
Breaking Biology News(10 mins):Texas AgriLife researchers helping 2Texas AgriLife researchers helping 3Texas AgriLife researchers helping 4How to read brain activity? 2BIO-key(R) Shareholders Overwhelmingly Approve Sale of Law Enforcement Division 2BIO-key(R) Shareholders Overwhelmingly Approve Sale of Law Enforcement Division 3Warner Chilcott to Hold 2009 Annual General Meeting of Shareholders and Special Court Ordered Meeting of Shareholders 50160 1Warner Chilcott to Hold 2009 Annual General Meeting of Shareholders and Special Court Ordered Meeting of Shareholders 50160 2Align Technology Announces Jury Verdict in Patent Litigation With Ormco Corporation 50156 1Align Technology Announces Jury Verdict in Patent Litigation With Ormco Corporation 50156 2Immucor Responds To FDA Notice 12802 1Immucor Responds To FDA Notice 12802 2
... signs of spring, like budding trees, are worth ce...mergence of fertile, winged termites swarming furi... them. , In New Orleans, as the swirling, airborn...archers with the Agricultural Research Service (AR...omeday knock down large numbers of Formosan subter...
...r imaging technologies allow physicians to visuali...tecting small blood clots not previously seen, but...,s outcome, a new study suggests. , The study incl...m. About half of the patients (98) had a multidete...gle-detector CT examination. The radiology examina...
...School of Medicine scientists have created the fir... possibly prevent the onset of a brain disease in ...indings, published online this week in the journal...velopment of a vaccine to prevent a group of fatal...cles called prions. , Although no cure for these d...
Other Biology News:Fungus Effective Against Winged Termites 2Newer imaging techniques may lead to over-treatment 2Active Vaccine Prevents Mice From Developing Prion Disease 2Active Vaccine Prevents Mice From Developing Prion Disease 3
(Date:12/4/2009)NEW YORK, Dec. 4 Stemline Therapeutics, Inc. today announced that data from pre-clinical studies of its IL-3R targeting agents, SL-401 and SL-501, in both in vitro and animal models of human chroni
(Date:12/3/2009)SAN FRANCISCO, Dec. 3 VIA Pharmaceuticals, Inc. (Nasdaq: VIAP ), a biotechnology company focused on the development of compounds for the treatment of cardiovascular and metabolic disease, today anno
(Date:12/3/2009)NEW DELHI, India, Dec. 3 /PRNewswire-Asia/ -- Dr. Susan Jiang, M.D., Ph.D.,Chief Science Officer at Shenzhen Beike Biotechnology Co. Ltd.,( http://www.beikebiotech.com ), spoke at a conference on Hig
(Date:12/2/2009)NEW YORK, Dec. 2 Reportlinker.com announces that a new market research report is available in its catalogue: ,, Drug Discovery Technologies - A Global Update of Market Trends & Opportunities ,,
Breaking Biology Technology:Stemline Therapeutics Announces Poster Presenting in vivo and Anti-Cancer Stem Cell Activity of SL-401 against Chronic Myeloid Leukemia (CML) at the 51st Annual Meeting of the American Society of Hematology (ASH) 2VIA Pharmaceuticals Completes Patient Visits in Phase 2 Trial of VIA-2291 2VIA Pharmaceuticals Completes Patient Visits in Phase 2 Trial of VIA-2291 3VIA Pharmaceuticals Completes Patient Visits in Phase 2 Trial of VIA-2291 4Beike Biotechnology CSO Speaks on Role of Stem Cells in Treating Diabetic Foot Disease at IPA Diabetic Foot Care Conference, India 2Beike Biotechnology CSO Speaks on Role of Stem Cells in Treating Diabetic Foot Disease at IPA Diabetic Foot Care Conference, India 3Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 2Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 3Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 4Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 5Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 6Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 7Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 8Reportlinker Adds Drug Discovery Technologies - A Global Update of Market Trends & Opportunities 9
...hows naturally occurring antibodies contained in, ...for Alzheimer,s disease, CHICAGO, April 15 The U...axter International Inc. (NYSE: BAX ) today,annou...tural antibodies,contained in GAMMAGARD LIQUID [Im... as KIOVIG in the European Union, a plasma-derived...
.../PRNewswire-FirstCall/ - Oncolytics Biotech Inc.,(...sentation by Dr.,Chandini Thirukkumaran of the Tom... Multiple Myeloma with Oncolytic Viral Therapy" wa...Cancer Research (AACR) Annual,Meeting. The meeting...,12-16, 2008., The presentation covered preclinic...
... CryoPort, Inc. (OTC,Bulletin Board: CYRX) (http...ent,community through their personal profile on My...he dynamic profile will include interviews with co...ent, and links to recent press., Visit CryoPort,.../profile.php?ID=19849 . Stay updated about CryoPo...
Other Biology Technology:Study Suggests GAMMAGARD LIQUID May Target the Primary Pathway Involved in Alzheimer's Disease 2Study Suggests GAMMAGARD LIQUID May Target the Primary Pathway Involved in Alzheimer's Disease 3Study Suggests GAMMAGARD LIQUID May Target the Primary Pathway Involved in Alzheimer's Disease 4Study Suggests GAMMAGARD LIQUID May Target the Primary Pathway Involved in Alzheimer's Disease 5Oncolytics Biotech Inc. Collaborators Present Reovirus Research for Multiple Myeloma at AACR Annual Meeting 2CryoPort Creates Personal Wall on Wallst.net's Financial Social Community, my.wallst.net 2
GIBCO Dulbecco's Phosphate-Buffered Saline (D-PBS) (1X) liquid from Invitrogen
Rabbit Anti-LSD1 / BHC110 Antibody, Unconjugated from Upstate
Dulbecco's Phosphate-Buffered Saline (D-PBS) powder from Invitrogen
Rabbit Anti-CUGBP2 Monoclonal Antibody, Unconjugated, Clone PADZMD.495 from Invitrogen
Biology Products: