Thu, 30 Oct 2003 18:47:37 GMT in article
<[email hidden]> Matti Narkia
Quoted message said:
First a couple of references about fish oil and cod liver oil. According to
them mercury levels in these oils seem to be negligible:
Koller H, Luley C, Klein B, Baum H, Biesalski HK.
[Contaminating substances in 22 over-the-counter fish oil and cod liver oil
preparations: cholesterol, heavy metals and vitamin A]
Z Ernahrungswiss. 1989 Mar;28(1):76-83. German.
PMID: 2718527 [PubMed - indexed for MEDLINE]
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=2718527&dopt=Abstract>
[snip]
Quoted message said:
van de Ven WS.
Mercury and selenium in cod-liver oil.
Clin Toxicol. 1978;12(5):579-81.
PMID: 679643 [PubMed - indexed for MEDLINE]
<http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=679643&dopt=Abstract>
[snip]
Quoted message said:
Secondly, from the same issue of NEJM a couple of studies which give
contradictory results about the association of mercury and coronary heart
disease:
Yoshizawa K, Rimm EB, Morris JS, Spate VL, Hsieh CC, Spiegelman D, Stampfer
MJ, Willett WC.
Mercury and the risk of coronary heart disease in men.
N Engl J Med. 2002 Nov 28;347(22):1755-60.
PMID: 12456851 [PubMed - indexed for MEDLINE]
http://content.nejm.org/cgi/content/full/347/22/1755
[snip]
Quoted message said:
Guallar E, Sanz-Gallardo MI, van't Veer P, Bode P, Aro A, Gomez-Aracena J,
Kark JD, Riemersma RA, Martin-Moreno JM, Kok FJ; Heavy Metals and Myocardial
Infarction Study Group.
Mercury, fish oils, and the risk of myocardial infarction.
N Engl J Med. 2002 Nov 28;347(22):1747-54.
PMID: 12456850 [PubMed - indexed for MEDLINE]
http://content.nejm.org/cgi/content/full/347/22/1747
Selenium reduces toxicity of mercury, because selenium forms tight compound
with mercury, which inactivates it. Many fish have high selenium content,
which reduces the toxicity of mercury in them. Still, if one eats a lot of
fish, it might be beneficial to take selenium supplements for precaution.
Seychelles' fish consumption is among the largest in the world. They consume
a lot of large predatory fish which typically have rather high mercury
content. Still, this has not had negative effect on the cognitive
development of the children there as has been shown in the long term
Seychelles Child Development Study, see
http://groups.google.com/groups?selm=iufd6t03mi92uc6pql9esu2lvrpkhqc9bb%404ax.com
(http://tinyurl.com/t1lp)
References about the protective effects of selenium against mercury
toxicity:
1: Frisk P, Wester K, Yaqob A, Lindh U.
Selenium protection against mercury-induced apoptosis and growth inhibition
in cultured K-562 cells.
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Dental amalgam and selenium in blood.
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Ned Tijdschr Tandheelkd. 1996 Mar;103(3):88-91. Review. Dutch.
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15: Paulsson K, Lundbergh K.
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in fish.
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"... The treatment of lakes with selenium has been found to be one of
the few known methods of lowering the mercury content of fish quickly
and easily."
16: Yoshida M, Abe M, [censored] K, Kikuchi K.
Bioavailability of selenium in the defatted dark muscle of tuna.
Food Addit Contam. 2002 Oct;19(10):990-5.
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http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12443562&dopt=Abstract
"... The results indicate that the defatted DMT contains high levels
of Se in a nutritionally available form."
17: Cappon CJ, Smith JC.
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cat food.
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--
Matti Narkia