A new study suggests that lead may be harmful even at very low blood concentrations. The study, funded by the National Institute of Environmental Health Sciences of the National Institutes of Health, will appear in the April 17 edition of The New England Journal of Medicine.
The five-year study found that children who have blood lead concentration lower than 10 micrograms per deciliter suffer intellectual impairment from the exposure. The researchers also discovered that the amount of impairment attributed to lead was most pronounced at lower levels. The study was carried out by researchers from Cornell University, Cincinnati Childrens Hospital Medical Center, and the University of Rochester School of Medicine.
An important feature of this new study is its focus on children with blood lead levels below 10 micrograms per deciliter, a threshold currently used by the Centers for Disease Control and Prevention to define an elevated lead level. Previous research has been concerned primarily with leads effects in the 10 to 30 micrograms per deciliter range, yet the new study finds lead-related impairments at lower levels.
Tom Hawkins | EurekAlert!
Amputees can learn to control a robotic arm with their minds
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
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