HOME >> BIOLOGY >> NEWS
Models help estimate children's exposure to toxins

For almost 10 years, Stanford's Jim Leckie and his students have been successfully collecting immense amounts of data, writing original software and building sophisticated statistical models - all to begin to measure how children are exposed to chemicals in their environments. But Leckie, the C. L. Peck, Class of 1906 Professor in the School of Engineering, may have achieved his greatest success when he decided to study children in the first place.

''When we began this work, most of the regulations were based on studies of adult white men - the healthiest segment of the population,'' Leckie will tell an audience Feb. 16 at a symposium on toxic substances in the environment at the annual meeting of the American Association for the Advancement of Science.

The foundation of Leckie's research is careful observation of the activities of normal, healthy children in everyday environments. His video cameras have captured hours of mundane activity in the homes of middle-class suburbanites and migrant farm workers.

It is not yet clear whether trace amounts of synthetic chemicals, increasingly present in the environment, pose a risk to human health. But it makes sense to begin to consider the issue by studying children, the most vulnerable segment of the population.

Compared to adults, young children have cell walls that are more permeable to environmental toxins. Babies are born with incomplete liver and kidney functions; the ability to detoxify chemicals matures with age. Children also have higher surface-to-volume ratios. So if a child and an adult are exposed to the same environment and absorb toxins through the skin, the child will receive a greater relative dose.

Leckie has used the hours of footage to build realistic models of how children might ingest or otherwise become exposed to substances, including toxins such as lead and pesticides, which may be present in their immediate environments in small amounts. The development of th
'"/>

Contact: Dawn Levy
dawnlevy@stanford.edu
650-725-1944
Stanford University
16-Feb-2004


Page: 1 2 3 4

Related biology news :

1. Applied Mathematical Models in Human Physiology
2. Models show gene flow from crops threatens wild plants
3. U.S. - FSU Partnering Models
4. Duke Geologist Decries Using Engineering Models To Predict Natural Phenomena
5. Models Assess Remedial Actions On Abandoned Mine Lands In Colorado
6. Computer Models Find Cost-Effective Solutions For Species Preservation
7. Global Change: Will Some Plant Species Be Left Behind? Studies Of EcosystemDynamics Make Wide Use Of Computer Models
8. Induced Mutant Mouse Models Of Lipoprotein Disorders And Atherosclerosis
9. NCAR Scientist Models Earths Climate and Vegetation Patterns At Last Glacial Peak
10. Cancer health risk significantly underestimated by EPAs ambient model estimates
11. Improved estimates of population extinction risk (Harding and McNamara)

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... 2017 Research and Markets has announced the ... to their offering. ... eye tracking market to grow at a CAGR of 30.37% during ... Market 2017-2021, has been prepared based on an in-depth market analysis ... and its growth prospects over the coming years. The report also ...
(Date:4/5/2017)... 5, 2017 Today HYPR Corp. , ... server component of the HYPR platform is officially ... end-to-end security architecture that empowers biometric authentication across Fortune ... already secured over 15 million users across the financial ... connected home product suites and physical access represent a ...
(Date:3/30/2017)... 2017 The research team of The Hong ... fingerprint identification by adopting ground breaking 3D fingerprint minutiae recovery and ... speed and accuracy for use in identification, crime investigation, immigration control, ... ... A research team led ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... the pharmaceutical and biotechnology industries to improve patient outcomes and quality of life, ... in analytical testing are being attributed to new regulatory requirements for all new ...
(Date:10/11/2017)... Alto, CA, USA (PRWEB) , ... October 11, 2017 , ... ... set to take place on 7th and 8th June 2018 in San Francisco, CA. ... policy influencers as well as several distinguished CEOs, board directors and government officials from ...
(Date:10/11/2017)... ... October 11, 2017 , ... A new study published in ... and fresh in vitro fertilization (IVF) transfer cycles. The multi-center matched ... , After comparing the results from the fresh and frozen transfer cohorts, the ...
(Date:10/10/2017)... California (PRWEB) , ... October 10, 2017 , ... Dr. ... speaking at his local San Diego Rotary Club. The event entitled ... Diego, CA and had 300+ attendees. Dr. Harman, DVM, MPVM was joined by ...
Breaking Biology Technology:
Cached News: