News tagged with lead

Related topics: children

R.I. lead law effective, often ignored

When landlords have followed Rhode Island's law requiring them to protect tenants from exposure to lead, their compliance has significantly reduced blood levels of the toxic metal in children. But in four ...

Jul 07, 2014
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Lead acts to trigger schizophrenia

Mice engineered with a human gene for schizophrenia and exposed to lead during early life exhibited behaviors and structural changes in their brains consistent with schizophrenia. Scientists at Columbia University's Mailman ...

May 31, 2013
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US finds lead poisoning from Ayurvedic medicines

US health researchers said Thursday that they have documented lead poisoning risks among pregnant women who took Ayurvedic medicine and issued a new warning on the safety of traditional pills.

Aug 23, 2012
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New health issues tied to low-level lead exposure

Despite dramatic progress in reducing Americans' exposure to lead over the past 25 years, a growing body of research finds that children and adults still face health risks from even very low levels of the toxic metal in their ...

Jul 17, 2012
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In what ways does lead damage the brain?

Exposure to lead wreaks havoc in the brain, with consequences that include lower IQ and reduced potential for learning. But the precise mechanism by which lead alters nerve cells in the brain has largely remained unknown.

Feb 29, 2012
popularity 5 / 5 (1) | comments 0 | with audio podcast

Lead

Lead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.

Lead is used in building construction, lead-acid batteries, bullets and shot, weights, and is part of solder, pewter, fusible alloys and radiation shields. Lead has the highest atomic number of all stable elements, although the next element, bismuth, has a half-life so long (longer than the estimated age of the universe) it can be considered stable. Like mercury, another heavy metal, lead is a potent neurotoxin that accumulates in soft tissues and bone over time. Lead poisoning was documented in ancient Rome, Greece, and China.

This text uses material from Wikipedia licensed under CC BY-SA