Medical Forum / Diseases and Disorders / Diabetes / April 2007
Obesity versus chemicals in T2 causation
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Peter C - 14 Apr 2007 00:20 GMT "Could eating oily fish increase the risk of diabetes? Eating oily fish could increase the risk of developing diabetes because of lethal chemicals found in its flesh, new research shows."
......... The South Korean research showed that fat people with the chemicals in their blood were more likely to suffer from insulin resistance that thin people whose blood was polluted.
However, those who were overweight but did not have the chemicals in their blood were no more likely to have been insulin resistant.
The findings, reported in this week's New Scientist, suggest that it is the chemicals, which are stored in fatty tissue, and not obesity itself, that is crucial in the development of diabetes."
http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html?in_articl e_id=447997&in_page_id=1798
Andrew B. Chung, MD/PhD - 14 Apr 2007 01:09 GMT > "Could eating oily fish increase the risk of diabetes? Eating oily fish > could increase the risk of developing diabetes because of lethal chemicals [quoted text clipped - 4 lines] > blood were more likely to suffer from insulin resistance than thin people > whose blood was polluted. Therefore, it remains wiser to be thin (lean&trim) in this world that is accursed with pollution.
The latter is inevitable as dictated by the 2nd Law of Thermodynamics, which is the scientific way of defining the curse of sin:
http://www.secondlaw.com/
Suggested reading:
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May GOD bless you.
Prayerfully in Jesus' ever-lasting love,
Andrew <>< -- Andrew B. Chung, MD/PhD http://EmoryCardiology.com
May HIS immortal brethren pray for our dying mortal friends and neighbors: http://HeartMDPhD.com/Convicts
In memory of our dearly departed Bob(this one) Pastorio: http://HeartMDPhD.com/Convicts/Bob
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Alan S - 14 Apr 2007 01:29 GMT >"Could eating oily fish increase the risk of diabetes? Eating oily fish >could increase the risk of developing diabetes because of lethal chemicals [quoted text clipped - 13 lines] > >http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html?in_articl e_id=447997&in_page_id=1798 Unfortunately I could only find the extract here: http://jech.bmj.com/cgi/content/extract/60/12/1006 Could low-level background exposure to persistent organic pollutants contribute to the social burden of type 2 diabetes?
Note the "could", and it is an editorial, not a full paper. Possibly you have access to the full version.
It would appear to be supported in part by this older paper: http://tinyurl.com/2e8p2y or http://care.diabetesjournals.org/cgi/reprint/29/7/1638?maxtoshow=&HITS=10&hits=1 0&RESULTFORMAT=&searchid=1&FIRSTINDEX=0&sortspec=relevance&volume=29&firstpage=1 638&resourcetype=HWCIT A Strong Dose-Response Relation Between Serum Concentrations of Persistent Organic Pollutants and Diabetes Results from the National Health and Examination Survey 1999–2002
Note the common authors of Duk-Hee Lee and David R Jacobs.
However, POPs in fish will vary enormously from fishing region to fishing region and the established links between good health and eating oily fish are so strong that I will certainly continue to include salmon, tuna and sardines in my own diet. Personally I eat fish 6-10 times weekly. One thing I'm not concerned about is the likelihood that I may get type 2.
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com/ http://loraltravel.blogspot.com/ latest: Athens and The Adriatic
wingmask@yahoo.com - 14 Apr 2007 02:15 GMT > On Fri, 13 Apr 2007 23:20:43 GMT, "Peter C" > [quoted text clipped - 49 lines] > > - Show quoted text - I will continue to include Mrs. Pauls fish sticks thank you very much.
Alan S - 14 Apr 2007 02:41 GMT >I will continue to include Mrs. Pauls fish sticks thank you very much. I shudder at the thought:-)
I didn't realise that taste-bud destruction was one of our complications. Sorry to hear that.
Cheers, Alan, T2, Australia. d&e, metformin 1500mg, ezetrol 10mg Everything in Moderation - Except Laughter. -- http://loraldiabetes.blogspot.com/ http://loraltravel.blogspot.com/ latest: Athens and The Adriatic
GysdeJongh - 14 Apr 2007 07:25 GMT > "Could eating oily fish increase the risk of diabetes? Eating oily fish > could increase the risk of developing diabetes because of lethal chemicals [quoted text clipped - 13 lines] > > http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html?in_articl e_id=447997&in_page_id=1798 Hi Peter C, thank you very much for this usefull link.
The association between chemicals and diabetes was noted before (See article below)
Also note that in the original artical they mention the relation between these chemicals and diabetes.NOT a relation between the consumption of fish and diabetes.First we would have to know if there is still a significant amount of these chemicals in fish after they have been banned for so many years already.Also I would like to know the amount of these chemicals in the fish we actually consume.Most of this fish is cultivated and may contain even less of these chemicals.What seems also important is the alternative : if we don't eat fish we will consume something else instead , like meat.Is the amount of polutant in meat less than ?? These chemicals used to be every where : in ink , plastics , pestisides , electronic devices , refrigerators.Today the amount in our environment is already much less than 20 years ago.
http://www.ncbi.nlm.nih.gov//entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citat ion&list_uids=17187776
Environ Res. 2007 Mar;103(3):413-8. Epub 2006 Dec 21. Association of a polychlorinated dibenzo-p-dioxin, a polychlorinated biphenyl, and DDT with diabetes in the 1999-2002 National Health and Nutrition Examination Survey. The association of a polychlorinated dibenzo-p-dioxin, a polychlorinated biphenyl, and p,p'-DDT with diabetes was evaluated using the 1999-2002 National Health and Nutrition Examination Survey. Persons 20 years old and older were included. Relationships with diagnosed diabetes, undiagnosed diabetes (glycohemoglobin (HbA1c) >6.1%), and total diabetes (diagnosed plus undiagnosed) were tested. When all three chemicals were evaluated together for total diabetes, the unweighted number of participants was 1830. All three compounds were significantly associated with diagnosed diabetes. PCB 126 and p,p'-DDT were significantly associated with undiagnosed diabetes. 1,2,3,6,7,8-hexachlorodibenzo-p-dioxin (HxCDD) was not associated with undiagnosed diabetes. When the three chemicals were included in a combined model for total diabetes, PCB 126>83.8pg/g lipid adjusted had an odds ratio of 2.57 (95% CI 1.33-4.95) compared to PCB 126 < or = 31.2pg/g lipid adjusted. Also significant in a combined model for total diabetes was p,p'-DDT 20.8-26.6ng/g lipid adjusted with an odds ratio of 2.52 (95% CI 1.26-5.02) and p,p'-DDT >26.6ng/g lipid adjusted with an odds ratio of 2.74 (95% CI 1.44-5.23) both compared to p,p'-DDT < or = 20.7ng/g lipid adjusted. HxCDD was not associated with total diabetes in a combined model. When participants with poor liver function and poor kidney function were removed from the analysis, the combined model for total diabetes produced similar results with PCB 126 and p,p'-DDT having been significantly associated, and HxCDD not having been associated. These findings add to the list of chemicals found to be associated with diabetes in the 1999-2002 National Health and Nutrition Examination Survey.
PMID: 17187776
Here are the abstracts of the original articles :
http://www.newscientist.com/channel/health/mg19425994.700-obesitys-helper-in-tri ggering-diabetes.html
Obesity's helper in triggering diabetes 12 April 2007
If true, it could turn the conventional wisdom of how obesity causes diabetes on its head. Emerging evidence suggests that pollutants stored in body fat may be contributing to the ongoing rise of type 2 diabetes.While obesity is still thought to be a major cause, there is more and more evidence to suggest that persistent organic pollutants (POPs) also play a key role.POPs are synthetic chemicals that can accumulate in the fatty tissue of animals. Many POPs - such as polychlorinated biphenyls (PCBs), which were used as coolants in electrical equipment, and pesticides such as DDT - have been banned in developed countries, but they remain in the food chain and often end up in people.Last year, Duk-Hee Lee at Kyungpook National University in Daegu, South Korea, and her colleagues reported that people with higher levels of six different POPs were more likely to have diabetes than people with low levels of POPs (New Scientist, 30 September 2006, p 18).Now, a follow-up study published last month suggests an association in non-diabetic people between certain pesticides, PCBs and insulin resistance - a precursor to diabetes (Diabetes Care, vol 30, p 622). Fat people with POPs in their blood were more likely to develop insulin resistance than thin people with POPs, but the expected association between obesity and insulin resistance disappeared in people with no POPs. "This suggests the possibility that POPs stored in fat tissue, not obesity itself, may be a key factor for the development of type 2 diabetes," says Lee.The information used by the researchers was designed to be representative of the general population in the US. "That's the somewhat shocking implication," says David Jacobs at the University of Minnesota, Minneapolis, who supervised Lee's research. "The association exists at everyday background levels of POPs."The precise mechanism by which POPs could contribute to diabetes remains a mystery. Some PCBs, such as dioxin, are known to interfere with genes that control insulin sensitivity, says Lee, although dioxin was not studied by her group.However, it could also be the other way around, says Matthew Longnecker, an epidemiologist at the National Institute of Environmental Health Sciences in Research Triangle Park, North Carolina. "People with diabetes or a pre-diabetic condition may clear POPs from their system at a slower rate," he says. This would lead to increased concentrations of POPs over time.Lee acknowledges that this is a possibility but thinks it is unlikely. Long-term studies will be needed to pin down the sequence of events, but previous studies have also shown a causal link between POPs and diabetes, she says. For example, US air force pilots who sprayed Agent Orange - which contains dioxin - during the Vietnam war are more likely to develop diabetes, as are people who live near waste sites contaminated with POPs.Robert Lustig, a paediatric endocrinologist at the University of California, San Francisco, agrees, but warns that the relationship could be more complicated yet, as animal studies have shown that environmental toxins in the womb may cause obesity in later life, which could then lead to diabetes. "We just don't know," he says. "But is there reason to be concerned? You bet."From issue 2599 of New Scientist magazine, 12 April 2007, page 16
Diabetes Care. 2007 Mar;30(3):622-8. Association between serum concentrations of persistent organic pollutants and insulin resistance among nondiabetic adults: results from the National Health and Nutrition Examination Survey 1999-2002.Lee DH, Lee IK, Jin SH, Steffes M, Jacobs DR Jr. Department of Preventive Medicine, School of Medicine, Kyungpook National University, 101 Dongin-dong, Jung-gu, Daegu, Korea 700-422. lee_dh@knu.ac.kr
OBJECTIVE: We reported strong relations between serum concentrations of persistent organic pollutants (POPs), especially organochlorine (OC) pesticides or nondioxin-like polychlorinated biphenyls (PCBs), and prevalence of diabetes in a U.S population with background exposure to POPs. Here, we investigated POPs and insulin resistance, a frequent pathogenic precursor of type 2 diabetes. RESEARCH DESIGN AND METHODS: Serum POPs and homeostasis model assessment of insulin resistance (HOMA-IR) were investigated cross-sectionally in 749 nondiabetic participants aged > or = 20 years. Nineteen POPs in five subclasses were selected, detectable in > or = 60% of participants. RESULTS: Among subclasses, OC pesticides were most strongly associated with HOMA-IR. Adjusted geometric means of HOMA were 3.27, 3.36, 3.48, and 3.85 (P for trend <0.01) across quartiles of OC pesticides. The relationship strengthened with increasing HOMA-IR percentile: adjusted odds ratios comparing the highest versus lowest POPs quartile were 1.8 for being > or = 50th percentile of HOMA-IR, 4.4 for being
> or = 75th percentile, and 7.5 for being > or = 90th percentile. Associations with elevated HOMA-IR appeared to be specific to oxychlordane and trans-nonachlor but also were found for two nondioxin-like PCBs. No HOMA-IR associations were seen in the other three POP subclasses. The association between OC pesticides and HOMA-IR tended to strengthen as waist circumference increased, with no apparent association in the lowest quartile of OC pesticide concentrations. CONCLUSIONS: These findings, coupled with those concerning diabetes prevalence, suggest that OC pesticides and nondioxin-like PCBs may be associated with type 2 diabetes risk by increasing insulin resistance, and POPs may interact with obesity to increase the risk of type 2 diabetes.
PMID: 17327331
hth Gys
Quentin Grady - 14 Apr 2007 07:35 GMT This post not CC'd by email On Fri, 13 Apr 2007 23:20:43 GMT, "Peter C" <petercy@hotmail.co.uk> wrote:
>"Could eating oily fish increase the risk of diabetes? Eating oily fish >could increase the risk of developing diabetes because of lethal chemicals >found in its flesh, new research shows." G'day G'day Peter,
The most significant word might well be "Could ... "
In their enthusiasm to plant a suggestion the question mark appears to be lost.
Salmon which is specifically mentioned in the article is not at all likely to be contaminated with PCB or DDT in New Zealand. Great care is taken to raise them in crystal clear waters reputed to be some of the purest in the world. Hey, they don't do it for New Zealanders but to ensure export appeal.
[snip]
>http://www.dailymail.co.uk/pages/live/articles/health/dietfitness.html?in_articl e_id=447997&in_page_id=1798 Best wishes,
 Signature Quentin Grady ^ ^ / New Zealand, >#,#< [ / \ /\ "... and the blind dog was leading."
http://homepages.paradise.net.nz/quentin
GysdeJongh - 14 Apr 2007 07:50 GMT > This post not CC'd by email > [quoted text clipped - 14 lines] > the purest in the world. Hey, they don't do it for New Zealanders but > to ensure export appeal. Hi Quentin, we are awake at the same time today and seem to have the same "bright ideas"
:) I hope your are doing well Have a nice weekend
Gys Off early to the store to buy salmon and very low dense veggies
Quentin Grady - 14 Apr 2007 09:28 GMT This post not CC'd by email On Sat, 14 Apr 2007 08:50:38 +0200, "GysdeJongh" <jongh711@planet.nl> wrote:
>> This post not CC'd by email >> [quoted text clipped - 19 lines] >:) >I hope your are doing well G'day G'day Gys,
I'm doing very well thanks, Gys.
>Have a nice weekend > >Gys >Off early to the store to buy salmon and very low dense veggies IMHO so you should.
The article is a wonderful example begging for the LEOR assessment.
L for the Logic. How valid is it? E for the level of appeal to Emotion. O for omissions. R for reliability of source. Has it for instance been peer reviewed?
Notice how the basic finding of toxic chemicals in fat tissue being correlated with risk of T2 diabetes JUMPS to the idea of avoiding oily fish. Notice that the research is South Korean. Maybe in South Korea the major source of contaminated fats is oily fish.
It is one heck of a jump to think that it would be in other countries. The South Koreans aren't going to have considered the PCB content in Canadian bacon or Texan feedlot beef or even DDT residues in the soils that now grow organic vegetables. There are so many omissions that a very big question mark makes more sense than a conclusion.
Best wishes,
 Signature Quentin Grady ^ ^ / New Zealand, >#,#< [ / \ /\ "... and the blind dog was leading."
http://homepages.paradise.net.nz/quentin
Peter C - 14 Apr 2007 10:29 GMT > Notice how the basic finding of toxic chemicals in fat tissue being > correlated with risk of T2 diabetes JUMPS to the idea of avoiding oily > fish. The article doesn't recommenmd "avoiding" any kind of fish.
Notice that the research is South Korean. Maybe in South Korea
> the major source of contaminated fats is oily fish. > > It is one heck of a jump to think that it would be in other countries. They are not making that jump merely establishing a principle, that if food is contaminated with certain chemicals it can be a trigger for diabetes. That holds good whatever the nationality of the food or fish in this case.
> The South Koreans aren't going to have considered the PCB content in > Canadian bacon or Texan feedlot beef or even DDT residues in the soils > that now grow organic vegetables. There are so many omissions that a > very big question mark makes more sense than a conclusion. The best sense came form one of the commentators on the research, Dr. Robert Lustig "We just don't know. But is there reason to be concerned? You bet."
Peter C - 14 Apr 2007 10:34 GMT > Salmon which is specifically mentioned in the article is not at all > likely to be contaminated with PCB or DDT in New Zealand. Great care > is taken to raise them in crystal clear waters reputed to be some of > the purest in the world. Don't let those pesky little school girls doing projects for Scinece Fairs near that "crystal clear water" for God's sake !
Quentin Grady - 14 Apr 2007 19:15 GMT This post not CC'd by email On 14 Apr 2007 02:34:05 -0700, "Peter C" <peter.corbally@btinternet.com> wrote:
>> Salmon which is specifically mentioned in the article is not at all >> likely to be contaminated with PCB or DDT in New Zealand. Great care [quoted text clipped - 3 lines] >Don't let those pesky little school girls doing projects for Scinece >Fairs near that "crystal clear water" for God's sake ! G'day G'day Peter,
Nice one but the water is tested.
Best wishes,
 Signature Quentin Grady ^ ^ / New Zealand, >#,#< [ / \ /\ "... and the blind dog was leading."
http://homepages.paradise.net.nz/quentin
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