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Low Lead Exposure and Tox Effects

Discussion in 'Jukwaa la Siasa' started by Kabwela, Oct 24, 2011.

  1. Kabwela

    Kabwela Member

    #1
    Oct 24, 2011
    Joined: Feb 11, 2008
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    “…the draft report finds sufficient evidence to associate blood lead concentrations lower than 5 ?g/deciliter with decreased academic performance and cognitive function, and “increased incidence of attention deficit hyperactivity disorder and problem behaviors” in children. The report also finds sufficient evidence to associate blood lead levels below 10 ?g/dL with delayed puberty, reduced growth, decreased IQ, and decreased hearing in children, as well as increased blood pressure and cardiovascular disease in adults…”

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    http://pubs.acs.org/cen/news/89/i43/8943notw5.htmlChemical and Engineering News

    24 October 2011

    Volume 89 Number 43

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    Toxicology: Draft government report links low-level lead exposure to negative health effects
    Britt EricksonBlood lead concentrations less than the federally established level of concern are associated with adverse health effects, a

    draft assessment by the

    National Toxicology Program concludes. Once finalized, the NTP assessment could prompt the federal government to lower lead exposure limits for workers as well as the blood lead level it considers to be elevated.

    Released on Oct. 14, the draft report finds sufficient evidence to associate blood lead concentrations lower than 5 ?g/deciliter with decreased academic performance and cognitive function, and “increased incidence of attention deficit hyperactivity disorder and problem behaviors” in children. The report also finds sufficient evidence to associate blood lead levels below 10 ?g/dL with delayed puberty, reduced growth, decreased IQ, and decreased hearing in children, as well as increased blood pressure and cardiovascular disease in adults.

    The current blood lead level of concern, set by the

    Centers for Disease Control & Prevention, is 10 ?g/dL. Prior to 1991 the level was 25 ?g/dL, and before 1985 it was 30 ?g/dL. Observers predict that if NTP’s preliminary conclusions make it into the final report, CDC will be under pressure to lower the level again. The

    National Institute for Occupational Safety & Health, which requested the evaluation, will consider the final conclusions as it reviews recommended lead exposure limits for workers, according to a NIOSH spokesman.

    A peer review panel is scheduled to evaluate the draft report at a public meeting next month in North Carolina. NTP is also accepting public written comments until Nov. 3.
     
  2. Mbaha

    Mbaha JF-Expert Member

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    Oct 24, 2011
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    Sasa mkubwa hili la lead toxicity linahusiana vipi na Jukwa la siasa???
     
  3. Mwita25

    Mwita25 JF-Expert Member

    #3
    Oct 24, 2011
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    Labda anajaribu kuelezea sababu zinazowafanya wanasiasa wetu kuwa mambumbumbu.
     
  4. King'asti

    King'asti JF-Expert Member

    #4
    Oct 24, 2011
    Joined: Nov 26, 2009
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    Sasa mbona hiyo 10 g/ dl hawana uhakika nayo? Ngoja tbs na mkemia waone final desa wa-paste
     
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