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,
Glutathione and cysteine Glutathione is a major antioxidant that undertakes key functions within the body, particularly in the brain and liver, where it plays a major role in detoxifying xenobiotics (foreign compounds) and carcinogens. The depletion of glutathione in these two organs is a major impact of lead toxicity, with glutathione deficiencies being linked to brain cell death. Glutathione is poorly absorbed, at least from supplements, but it is manufactured within the body, so the optimum way to maximize levels is through maintaining good levels of the precursor molecules: cysteine, glutamic acid (glutamate as a salt) and glycine. Cysteine is the rarest of these in western diets, and is found in red peppers, garlic, onions, broccoli, Brussels sprouts, oats and wheat germ. It is readily destroyed by heat and processing, so little survives in cooked eggs or pasteurized milk, though significant amounts are found in undenatured (processed at low temperature) whey protein; and whey has been consistently linked with higher glutathione levels. However, should cysteine be unavailable, new cystine (the stable form of cysteine) can be formed by breaking down methionine. Glutamate is more common and is found in food flavorings such as MSG and a variety of protein-rich foods, including meat, fish and beans. It can also be manufactured inside the liver from other amino acids.
Glutathione also requires vitamin B6 for its manufacture but, in a demonstration of the complexities involved, B6 deficiency can actually increase glutathione levels. Given that glutathione manufacture occurs and is regulated inside the body, it cannot be automatically assumed that consumption of glutathione precursors, or glutathione itself, will directly relate to glutathione levels within the body, though it may maximize possible production.
system lead poisoning |
LEAD Project | egroups | Library
- Fact Sheets | Home
Page | Media Releases
Newsletters | Q & A | Referral lists | Reports | Site Map | Slide Shows - Films | Subscription | Useful Links | Search this Site
Updated 21 January 2012
Copyright © The LEAD Group Inc. 1991- 2012
PO Box 161 Summer Hill NSW 2130 Australia
Phone: +61 2 9716 0014