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6 messages
6 total messages Started by Ian Goddard Sat, 02 Aug 2003 05:00
Iron Toxicity
#760
Author: Ian Goddard
Date: Sat, 02 Aug 2003 05:00
90 lines
6039 bytes
 
 After mentioning potential risks associated with iron intake 
 above necessary levels to some friends, some of whom seemed
 skeptical, I gathered some of the data, which, having 
 collected, I thought I'd share with folks here... 

 This review from "Nutrition Today" (5/6/97) by two leading 
 researchers examines risks associated with iron and concludes 
 that apart from deficiencies, "There is little reason to support 
 a general need for iron supplementation in the diet at any age. 
 [...] don't expose your system to more iron than it needs." 
 While essential at recommended levels, iron generates toxic 
 oxygen radicals. It also notes that iron intake is cumulative, 
 since "iron accumulates in the brain with normal aging." 
http://web.archive.org/web/20010901081956/http://pspinformation.com/nutrition/minerals/iron.shtml

 Iron's possible supporting role in neurological degeneration:

 Proceedings of the National Academy of Sciences (May 28, 2002): 
 "Whereas a decade ago thoughts of metals and Alzheimer's disease
 (AD) conjured up thoughts of tossing out your aluminum cookware,
 more recently, zinc, copper, and iron have been implicated in 
 AD pathology." 
http://www.pnas.org/cgi/content/full/99/11/7317

 Cellular and Molecular Biology (June 2000): "In several 
 neurodegenerative diseases, iron accumulates at sites of 
 brain pathology. Since post-mortem examination cannot 
 distinguish whether iron accumulation caused the damage or 
 resulted from damage, it is necessary to manipulate iron in 
 animal and tissue culture models to assess its causal role(s). 
 [...] iron supplementation to ID rats increased damage and 
 microgliosis in the above regions. [...] In addition, 
 iron+zinc supplementation dramatically increased damage to 
 hippocampal CA1 whereas zinc supplementation alone had no effect."
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10875437&dopt=Abstract

 Journal of Neurochemistry (July 1992): "Iron, a transition 
 metal possibly involved in the pathogenesis of Parkinson's 
 disease, was tested for its toxic effects toward cultures of 
 dissociated rat mesencephalic cells. [...] Altogether, these 
 results suggest (a) that ferrous iron is a potent neurotoxin 
 for dopaminergic neurons as well as for other cell types in 
 dissociated mesencephalic cultures [...]."
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1613493&dopt=Abstract

 Professor James Connor (author of "Nutrition Today" review 
 quoted at top of post): "Our data had led to the discovery 
 that the brain's ability to mobilize iron is diminished in 
 Alzheimer's Disease and in specific regions of the brain 
 in Parkinson's Disease. This diminished iron mobilization 
 could lead to increased susceptibility to oxidative damage 
 and cell death; both of which are prominent features in 
 Alzheimer's and Parkinson's diseases."
http://www.hmc.psu.edu/depts/old%20pages-kms%20save/neuro/faculty/jrconnor.htm

 Current Opinion in Chemical Biology (April 4, 2000): "Data 
 are now rapidly accumulating to show that metallochemical 
 reactions might be the common denominator underlying 
 Alzheimer's disease, amyotrophic lateral sclerosis, prion 
 diseases, cataracts, mitochondrial disorders and Parkinson's 
 disease. In these disorders, an abnormal reaction between a 
 protein and a redox-active metal ion (copper or iron) 
 promotes the formation of reactive oxygen species or radicalization."
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=10742195&dopt=Abstract

 Alzheimer�s disease (AD) appears to be associated with 
 a dysregulation of heavy metals, possibly as a result of
 impairment of metallothione (the body's natural defense 
 against metal toxicity) that may be associated with the
 ApoE genetic defect that increases the risk of AD.  

 Aluminum and Alzheimer's disease:
http://www.google.com/groups?selm=gq8havshkhetd6s78ctbgvc8iev0gtma1n%404ax.com

 Mercury and Alzheimer's disease:
http://www.google.com/groups?selm=3af37029.2307577%40news.erols.com


  http://IanGoddard.net/journal.htm

  "To lengthen thy life, lessen thy meals." Ben Franklin

  Ongoing CR-monkey-study update: "In the monkeys...those on
  reduced feeding since the study started are dying at a rate 
  that is about half that of the monkeys receiving a full food
  ration." Associated Press: Eating less may extend human life.
  August 1, 2002 : http://www.msnbc.com/news/788746.asp?0si=- 

 
Re: Iron Toxicity
#761
Author: Anth
Date: Sun, 03 Aug 2003 12:30
100 lines
6293 bytes
Good way to get rid of iron is to give blood.
Anth
"Ian Goddard" <igoddard@erols.mom> wrote in message
news:bhfmiv867s916mglu8ioerf60ninn8b2hs@4ax.com...
>
>  After mentioning potential risks associated with iron intake
>  above necessary levels to some friends, some of whom seemed
>  skeptical, I gathered some of the data, which, having
>  collected, I thought I'd share with folks here...
>
>  This review from "Nutrition Today" (5/6/97) by two leading
>  researchers examines risks associated with iron and concludes
>  that apart from deficiencies, "There is little reason to support
>  a general need for iron supplementation in the diet at any age.
>  [...] don't expose your system to more iron than it needs."
>  While essential at recommended levels, iron generates toxic
>  oxygen radicals. It also notes that iron intake is cumulative,
>  since "iron accumulates in the brain with normal aging."
>
http://web.archive.org/web/20010901081956/http://pspinformation.com/nutrition/minerals/iron.shtml
>
>  Iron's possible supporting role in neurological degeneration:
>
>  Proceedings of the National Academy of Sciences (May 28, 2002):
>  "Whereas a decade ago thoughts of metals and Alzheimer's disease
>  (AD) conjured up thoughts of tossing out your aluminum cookware,
>  more recently, zinc, copper, and iron have been implicated in
>  AD pathology."
> http://www.pnas.org/cgi/content/full/99/11/7317
>
>  Cellular and Molecular Biology (June 2000): "In several
>  neurodegenerative diseases, iron accumulates at sites of
>  brain pathology. Since post-mortem examination cannot
>  distinguish whether iron accumulation caused the damage or
>  resulted from damage, it is necessary to manipulate iron in
>  animal and tissue culture models to assess its causal role(s).
>  [...] iron supplementation to ID rats increased damage and
>  microgliosis in the above regions. [...] In addition,
>  iron+zinc supplementation dramatically increased damage to
>  hippocampal CA1 whereas zinc supplementation alone had no effect."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=10875437&dopt=Abstract
>
>  Journal of Neurochemistry (July 1992): "Iron, a transition
>  metal possibly involved in the pathogenesis of Parkinson's
>  disease, was tested for its toxic effects toward cultures of
>  dissociated rat mesencephalic cells. [...] Altogether, these
>  results suggest (a) that ferrous iron is a potent neurotoxin
>  for dopaminergic neurons as well as for other cell types in
>  dissociated mesencephalic cultures [...]."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=1613493&dopt=Abstract
>
>  Professor James Connor (author of "Nutrition Today" review
>  quoted at top of post): "Our data had led to the discovery
>  that the brain's ability to mobilize iron is diminished in
>  Alzheimer's Disease and in specific regions of the brain
>  in Parkinson's Disease. This diminished iron mobilization
>  could lead to increased susceptibility to oxidative damage
>  and cell death; both of which are prominent features in
>  Alzheimer's and Parkinson's diseases."
>
http://www.hmc.psu.edu/depts/old%20pages-kms%20save/neuro/faculty/jrconnor.htm
>
>  Current Opinion in Chemical Biology (April 4, 2000): "Data
>  are now rapidly accumulating to show that metallochemical
>  reactions might be the common denominator underlying
>  Alzheimer's disease, amyotrophic lateral sclerosis, prion
>  diseases, cataracts, mitochondrial disorders and Parkinson's
>  disease. In these disorders, an abnormal reaction between a
>  protein and a redox-active metal ion (copper or iron)
>  promotes the formation of reactive oxygen species or radicalization."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=10742195&dopt=Abstract
>
>  Alzheimer's disease (AD) appears to be associated with
>  a dysregulation of heavy metals, possibly as a result of
>  impairment of metallothione (the body's natural defense
>  against metal toxicity) that may be associated with the
>  ApoE genetic defect that increases the risk of AD.
>
>  Aluminum and Alzheimer's disease:
>
http://www.google.com/groups?selm=gq8havshkhetd6s78ctbgvc8iev0gtma1n%404ax.com
>
>  Mercury and Alzheimer's disease:
> http://www.google.com/groups?selm=3af37029.2307577%40news.erols.com
>
>
>   http://IanGoddard.net/journal.htm
>
>   "To lengthen thy life, lessen thy meals." Ben Franklin
>
>   Ongoing CR-monkey-study update: "In the monkeys...those on
>   reduced feeding since the study started are dying at a rate
>   that is about half that of the monkeys receiving a full food
>   ration." Associated Press: Eating less may extend human life.
>   August 1, 2002 : http://www.msnbc.com/news/788746.asp?0si=-
>
>
Re: Iron Toxicity
#762
Author: Virginia
Date: Sun, 03 Aug 2003 18:02
114 lines
6460 bytes
I've also seen information that iron overload can cause heart problems -
hence the greater percentage of men having problems than women - as women
lose a lot of iron with their menses.
Iron-supplemented baby formula is SCARY.

Virginia
"Forgiveness is easier to obtain than permission."

www.thedesignuniverse.com

"Ian Goddard" <igoddard@erols.mom> wrote in message
news:bhfmiv867s916mglu8ioerf60ninn8b2hs@4ax.com...
>
>  After mentioning potential risks associated with iron intake
>  above necessary levels to some friends, some of whom seemed
>  skeptical, I gathered some of the data, which, having
>  collected, I thought I'd share with folks here...
>
>  This review from "Nutrition Today" (5/6/97) by two leading
>  researchers examines risks associated with iron and concludes
>  that apart from deficiencies, "There is little reason to support
>  a general need for iron supplementation in the diet at any age.
>  [...] don't expose your system to more iron than it needs."
>  While essential at recommended levels, iron generates toxic
>  oxygen radicals. It also notes that iron intake is cumulative,
>  since "iron accumulates in the brain with normal aging."
>
http://web.archive.org/web/20010901081956/http://pspinformation.com/nutritio
n/minerals/iron.shtml
>
>  Iron's possible supporting role in neurological degeneration:
>
>  Proceedings of the National Academy of Sciences (May 28, 2002):
>  "Whereas a decade ago thoughts of metals and Alzheimer's disease
>  (AD) conjured up thoughts of tossing out your aluminum cookware,
>  more recently, zinc, copper, and iron have been implicated in
>  AD pathology."
> http://www.pnas.org/cgi/content/full/99/11/7317
>
>  Cellular and Molecular Biology (June 2000): "In several
>  neurodegenerative diseases, iron accumulates at sites of
>  brain pathology. Since post-mortem examination cannot
>  distinguish whether iron accumulation caused the damage or
>  resulted from damage, it is necessary to manipulate iron in
>  animal and tissue culture models to assess its causal role(s).
>  [...] iron supplementation to ID rats increased damage and
>  microgliosis in the above regions. [...] In addition,
>  iron+zinc supplementation dramatically increased damage to
>  hippocampal CA1 whereas zinc supplementation alone had no effect."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_ui
ds=10875437&dopt=Abstract
>
>  Journal of Neurochemistry (July 1992): "Iron, a transition
>  metal possibly involved in the pathogenesis of Parkinson's
>  disease, was tested for its toxic effects toward cultures of
>  dissociated rat mesencephalic cells. [...] Altogether, these
>  results suggest (a) that ferrous iron is a potent neurotoxin
>  for dopaminergic neurons as well as for other cell types in
>  dissociated mesencephalic cultures [...]."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_ui
ds=1613493&dopt=Abstract
>
>  Professor James Connor (author of "Nutrition Today" review
>  quoted at top of post): "Our data had led to the discovery
>  that the brain's ability to mobilize iron is diminished in
>  Alzheimer's Disease and in specific regions of the brain
>  in Parkinson's Disease. This diminished iron mobilization
>  could lead to increased susceptibility to oxidative damage
>  and cell death; both of which are prominent features in
>  Alzheimer's and Parkinson's diseases."
>
http://www.hmc.psu.edu/depts/old%20pages-kms%20save/neuro/faculty/jrconnor.h
tm
>
>  Current Opinion in Chemical Biology (April 4, 2000): "Data
>  are now rapidly accumulating to show that metallochemical
>  reactions might be the common denominator underlying
>  Alzheimer's disease, amyotrophic lateral sclerosis, prion
>  diseases, cataracts, mitochondrial disorders and Parkinson's
>  disease. In these disorders, an abnormal reaction between a
>  protein and a redox-active metal ion (copper or iron)
>  promotes the formation of reactive oxygen species or radicalization."
>
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_ui
ds=10742195&dopt=Abstract
>
>  Alzheimer's disease (AD) appears to be associated with
>  a dysregulation of heavy metals, possibly as a result of
>  impairment of metallothione (the body's natural defense
>  against metal toxicity) that may be associated with the
>  ApoE genetic defect that increases the risk of AD.
>
>  Aluminum and Alzheimer's disease:
>
http://www.google.com/groups?selm=gq8havshkhetd6s78ctbgvc8iev0gtma1n%404ax.c
om
>
>  Mercury and Alzheimer's disease:
> http://www.google.com/groups?selm=3af37029.2307577%40news.erols.com
>
>
>   http://IanGoddard.net/journal.htm
>
>   "To lengthen thy life, lessen thy meals." Ben Franklin
>
>   Ongoing CR-monkey-study update: "In the monkeys...those on
>   reduced feeding since the study started are dying at a rate
>   that is about half that of the monkeys receiving a full food
>   ration." Associated Press: Eating less may extend human life.
>   August 1, 2002 : http://www.msnbc.com/news/788746.asp?0si=-
>
>
Re: Iron Toxicity
#763
Author: Ian Goddard
Date: Sun, 03 Aug 2003 19:10
90 lines
5662 bytes
"Virginia" <vodine@direct.ca> wrote:

>I've also seen information that iron overload can cause heart problems -
>hence the greater percentage of men having problems than women - as women
>lose a lot of iron with their menses.

  IAN: Indeed, as well as being neurotoxic, iron may
  also play a causal role in heart disease. Anything 
  that generates free radicals has the potential for 
  widespread harm. From the "Nutrition Today" review:

***********************************************************

[...] there is growing concern that too much iron in our diets may be
related to certain diseases like cancer, cardiovascular disease, and
certain neurologic diseases. [...]

A 1992 prospective study[31] of Finnish men established that an
elevated serum level of ferritin was a significant risk factor for
acute myocardial infarction (AMI). The results of this study are
consistent with a 1972 report that serum ferritin levels are
positively correlated with heart disease.[32] Elevations in serum
ferritin can be (but are not always) reflective of high levels of
stored iron in the body. Menses in young adult women has been reported
to at least partly explain why women are generally at lower risk for
heart disease than men. 

[ IAN: The implication being that the loss of iron from menstration
may reduce heart disease, as Virginia noted. Back to the review... ]

Indeed, a Framingham study showed that premenopausal hysterectomy
eliminated the protection against heart disease.[33] Estrogen
replacement therapy alone does not decrease the risk of heart disease
in women or men. Most studies on iron and heart disease focus on
excess iron. Epidemiologic studies have revealed that where iron
deficiency is prevalent in a population, there is a low prevalence of
heart disease. Obviously, the heart requires a constant supply of iron
for normal function, but there is nothing to indicate that a balanced
diet will not provide sufficient iron for normal heart activity.

One other area where increased iron has been considered to increase
cardiovascular problems has been in association with atherogenicity of
low-density lipoprotein (LDL) associated cholesterol. Earlier, we
mentioned how oxidatively damaged proteins function poorly or not at
all. Iron can cause oxidative damage to LDL, causing LDL to be rapidly
cleared from plasma.

Although at first glance, rapid removal of LDL from plasma may appear
to be a positive effect, the rapid uptake appears to present problems
for the endothelial cells surrounding the blood vessel. It is also
thought that incomplete oxidative damage to LDL may render it less
functional but also less likely to be cleared from the plasma. Iron
itself can be found within atherosclerotic lesions. 

[...]

31. Salonen JT, Nyyssonen K, Korpela H, Tuomilehto J, Seppanen SR.
High stored iron levels are associated with excess risk of myocardial
infarction. Circulation 1992;86:803-11.

32. Cook JD, finch CA, Smith NJ. Evaluation of the iron status of a
population. Blood 1976;48: 449-54.

33. Gordon T, Kannel WB, Hjortland MC, McNamara PM. Menopause and
coronary disease: The Framingham Study. Ann Intern Med 1976;85:447-55.

***********************************************************

http://web.archive.org/web/20010901081956/http://pspinformation.com/nutrition/minerals/iron.shtml



>>  Aluminum and Alzheimer's disease:
>>http://www.google.com/groups?selm=gq8havshkhetd6s78ctbgvc8iev0gtma1n%404ax.com
>>
>>  Mercury and Alzheimer's disease:
>> http://www.google.com/groups?selm=3af37029.2307577%40news.erols.com
>>
>>
>>   http://IanGoddard.net/journal.htm
>>
>>   "To lengthen thy life, lessen thy meals." Ben Franklin
>>
>>   Ongoing CR-monkey-study update: "In the monkeys...those on
>>   reduced feeding since the study started are dying at a rate
>>   that is about half that of the monkeys receiving a full food
>>   ration." Associated Press: Eating less may extend human life.
>>   August 1, 2002 : http://www.msnbc.com/news/788746.asp?0si=-
>>
>
Re: Iron Toxicity
#764
Author: Steve Harris
Date: Mon, 04 Aug 2003 02:52
19 lines
2095 bytes
"Virginia" <vodine@direct.ca> wrote in message
news:viqjic7mgj9sa5@corp.supernews.com...
> I've also seen information that iron overload can cause
heart problems -
> hence the greater percentage of men having problems than
women - as women
> lose a lot of iron with their menses.

That's in adults. It takes a decade at least to build up
that much iron.


> Iron-supplemented baby formula is SCARY.

Only to the uninformed. Unless you're still drinking it, my
dear?  Maybe giving it to hubby on the side?

SBH
Re: Iron Toxicity
#765
Author: Dr. Andrew B. Chung, MD/PhD
Date: Mon, 04 Aug 2003 05:23
27 lines
2294 bytes
"Steve Harris" <sbharris@ix.RETICULATEDOBJECTcom.com> wrote in message news:<bgkhp9$ojm$1@slb6.atl.mindspring.net>...
> "Virginia" <vodine@direct.ca> wrote in message
> news:viqjic7mgj9sa5@corp.supernews.com...
> > I've also seen information that iron overload can cause
>  heart problems -
> > hence the greater percentage of men having problems than
>  women - as women
> > lose a lot of iron with their menses.
> 
> That's in adults. It takes a decade at least to build up
> that much iron.
> 
> 
> > Iron-supplemented baby formula is SCARY.
> 
> Only to the uninformed. Unless you're still drinking it, my
> dear?  Maybe giving it to hubby on the side?
> 
> SBH

Dr. Harris is correct in his assessment that growing babies need extra
iron to prevent iron deficiency anemia.

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
http://www.heartmdphd.com
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