Action News vol 10 no 2, June 2010, ISSN 1324-6011
Incorporating Lead Aware Times ( ISSN 1440-4966) and Lead Advisory Service News (ISSN 1440-0561)
The Journal of The LEAD (Lead Education and Abatement Design) Group Inc.
Nutrition to Fight Lead Poisoning
Robert J. Taylor, additional references sourced by Elizabeth O’Brien,
Edited by Anne Roberts,
Selenium appears to be protective against lead-induced impairment. Animal studies indicate it protects against and reduces lead impact on the liver, kidneys, and brain, while human studies indicate it reduces lead-induced hearing loss. It has been linked to lower blood lead levels in some studies. The mechanism for this appears to be the tendency of lead and selenium to form non-toxic compounds. At high levels selenium can exacerbate lead toxicity, at least in some animals.
Australians and New Zealanders tend to have low selenium levels as our soils are selenium deficient. Brazil nuts are one of the best sources of selenium: 2 nuts a day ensures your recommended daily intake, 16 nuts a day would be likely to raise your average intake above recommended maximum levels (400 (g) and more than 25 a day would put you at high risk of selenium poisoning. Kidneys (pig, ox, duck and calf) and kippers can provide even higher levels of selenium, while other good sources are alfalfa seeds, seafood (fish, crustaceans, mollusks) liver, and eggs. Selenium supplementation may slightly lower average mortality, though the evidence is not yet firm.
Protective Effects of Selenium and Zinc on Changes in Catecholamine Levels of Brain Regions in Lead Intoxified Rats A.A. Moshtaghie, E. Aghadavod, M. Ani and M. Fazilati Pakistan J. of Biological Sciences Vol. 10 Is. 17, www.ansijournals.com/abstract.php?doi=pjbs.2007.2964.2967 [finds selenium is protective of some lead-induced brain damage; there is a similar article by the same team on acetyl cholinesterase at http://journals.mui.ac.ir/rps/article/viewFile/1214/451 ]
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