Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

BUSPH Researchers Link Widely Used Chemicals to ADHD in Children

21.07.2010
A new study led by a team of Boston University School of Public Health researchers suggests a link between polyfluoroalkyl chemicals (PFCs), industrial compounds which are widely used in many consumer products, and attention deficit hyperactivity disorder (ADHD) in children.

Published online, ahead of print, in the journal Environmental Health Perspectives, the researchers found "increased odds of ADHD in children with higher serum PFC levels." The researchers used data from the National Health and Nutrition Examination Survey (NHANES) to compare the PFC levels found in serum samples taken from 571 children, ages 12 to 15. The parents of 48 of these children reported their children were diagnosed with ADHD, one of the most common neurodevelopmental disorders in children.

NHANES is an ongoing national survey of a representative sample of the U.S. population that gathers data on dietary and health factors conducted by the Centers for Disease Control and Prevention.

PFCs are highly stable compounds used in industrial and commercial products like stain-resistance coatings, food packaging, and fire-fighting foams. In a 2003-2004 survey, NHANES examined 2,094 blood samples taken from the U.S. population and found more than 98 percent of the sample had detectable serum levels of PFCs, according to the study. Once absorbed into the body, it can take years for some types of PFCs to be partially eliminated.

Although the study indicates there is a link between PFCs and ADHD, lead author Kate Hoffman said it is not known if there is a causal relationship between the two.

"There's a link between this exposure and outcome but we're not really sure what way that goes," said Hoffman, PhD, who conducted the study while completing her doctorate in environmental health at BUSPH. "What we can say is children with this outcome tend to have higher levels of PFCs in their blood." Because the PFC measurements were collected at the same time as the parental report of ADHD diagnosis, Hoffman said it is unknown whether children with ADHD engage in behavior leading to increased PFC exposure or if higher serum PFC levels in children result in ADHD.

The researchers examined the connection between four PFCs, perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), and perfluorohexane sulfonic acid (PFHxS) and samples from children in which there were parental reports of ADHD diagnosis.

The authors focused on ADHD because studies on animals have suggested exposure to PFCs can have neurotoxic effects. There is little information, however, on the chemicals' effects on human development.

ADHD is one of the most common neurodevelopmental disorders, Hoffman said. It is also unknown what causes ADHD, she said, but genetic and environmental factors have been associated with the disorder.

"Given the extremely prevalent exposure to PFCs, further investigation into the impact of PFC exposure on ADHD and other neurodevelopmental endpoints is warranted," the authors wrote.

Co-authors of the article include Boston University School of Public Health faculty members Thomas Webster, DSc, associate professor of environmental health; Janice Weinberg, ScD, associate professor of biostatistics; Verónica Vieira, MS, DSc, associate professor of environmental health; and Marc G. Weisskopf, PhD, of the Harvard School of Public Health. The study was funded in part by the Boston University Center for Interdisciplinary Research in Environmental Exposures and Health and by a grant from the National Institute of Environmental Health (NIEHS), National Institutes of Health (NIH).

The full study is available on the Environmental Health Perspectives website.

Elana Zak | EurekAlert!
Further information:
http://www.bu.edu

More articles from Studies and Analyses:

nachricht A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg

nachricht Urbanization to convert 300,000 km2 of prime croplands
27.12.2016 | Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

A big nano boost for solar cells

18.01.2017 | Power and Electrical Engineering

Glass's off-kilter harmonies

18.01.2017 | Materials Sciences

Toward a 'smart' patch that automatically delivers insulin when needed

18.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>