Author Topic: No Mas Pescado?  (Read 1106 times)

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Offline Anonymous

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No Mas Pescado?
« on: March 25, 2006, 03:37:00 PM »
Scientists doubt the benefits of Omega 3 fats in fish

Asian News International

London, March 25, 2006
            
      
            
      
      
      
      
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A study published online by the British Medical Journal doesn't find evidence of a clear benefit of omega 3 fats on health. Although these findings do not rule out an important effect of omega 3 fats, but suggest that the evidence should be reviewed regularly, according to researchers.

Consumption of long chain omega 3 fatty acids, found in oily fish and fish oils, and a shorter chain omega 3, found in some plant oils, is thought to protect against heart disease. UK guidelines encourage the general public to eat more oily fish, and higher amounts are advised after a heart attack.

Researchers analysed 89 studies (48 randomised controlled trials and 41 cohort studies) to assess the health effects of long and short chain omega 3 fats on total mortality, cardiovascular events, cancer, and strokes.

Each study involved a treatment group and a control group and investigated the effect of omega 3 intake on health for at least six months. Differences in study quality were taken into account to identify and minimise bias.

Pooling the results showed no strong evidence that omega 3 fats have an effect on total mortality or combined cardiovascular events. The few studies at low risk of bias were more consistent, but they also showed no effect of omega 3 on total mortality or cardiovascular events.

When data on long chain omega 3 fats were analysed separately, total mortality and cardiovascular events were not reduced. No study showed increased risk of cancer or stroke with higher intake of omega 3, but there were too few events to rule out important effects.

We are faced with a paradox, says researchers in an accompanying editorial. Health recommendations advise increased consumption of oily fish and fish oils. However, industrial fishing has depleted the world's fish stocks by some 90 percent since 1950, and rising fish prices reduce affordability particularly for people with low incomes.

Global production trends suggest that, although fish farming is expanding rapidly, we probably do not have a sustainable supply of long chain omega 3 fats, they warn. (ANI)
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Offline Deborah

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« Reply #1 on: March 25, 2006, 06:46:00 PM »
What a disappointment.
There are vegetable sources:
Omega6 Fatty Acids (linoleic acid) ? Corn, Sesame, Sunflower and unrefined Safflower oils.

Omega3 Fatty Acids (alpha-linoleic acid)- Oily fish, flaxseed oil, hemp oil, soybean oil, pumpkin seeds, walnuts, and dark green vegetables.
As well as sardines and salmon. No mention of that.

Or the real problem:
Need three Omega6 to one Omega3. Average American diet contains 10-20 times more Omega6 than Omega3.

It's easy to believe that total mortality and cardiovascular events were not reduced simply by supplementing with Omega3. If the researchers didn't require particpants to decrease their Omega6 and trans fats they quiet likely didn't have the right balance to effect positive results.

Based on 2000 Calories per day
Total Fat should be less than 65g
20 g Saturated Fat and 45g Mono or Good Poly
That's for a healthy specimen.

One thing for certain, fish oil and other sources of Omega3 are a hell of a lot cheaper than angioplasty or bypass surgery.

This study reminds me of the big gov't funded women's study:


The study in question, the huge, government-sponsored Women?s Health Initiative, looked at whether reducing fat intake to 20 percent of daily calories would lower the risks of heart disease and cancer among postmenopausal women. Half of the nearly 50,000 women who participated were randomly assigned to lower their fat intake, increase the amount of fruits and vegetables they ate to five or more daily servings, and consume six or more servings of grains daily. The other half, assigned to the control group, made no change in their diets. Now, a major article in the Journal of the American Medical Association reports that after eight years, the risks of heart disease and cancer remained the same.

Before you rush out for a meal of baked brie, fried chicken, and ice cream, consider a few caveats. This study advised women in the experimental group to lower total fat without giving them any information about the kinds of fat to be concerned about. In my view, saturated fat and trans-fat are the major culprits in the mainstream North American diet, more than total fat. I would like to see a similar study that compared the mainstream diet to the Mediterranean diet, low in bad fat but rich in olive oil, other monounsaturated fats (nuts, avocados), and omega-3s (oily fish, walnuts, etc.)

Dean Ornish, a main proponent of ultra-low-fat diets (as low as 10 percent of calories) complains that this study did not get women to cut enough fat out to see health benefits. But diets lower in fat than 20 percent of calories are very hard to follow. Food just becomes uninteresting with that little fat, and people won't stick with such diets unless they are highly motivated (as when they are faced with a life-threatening diagnosis or the need for coronary bypass surgery). This much-publicized study was very well designed and has to be taken seriously. I hope it will not send the message to the public that fat doesn't matter. Fat does matter, both in terms of its contribution to total calories and, especially, in terms of its chemical nature. Many North Americans are eating too many calories, and high-fat foods account for a lot of the excess. In addition they are eating the wrong kinds of fats ? too many of the bad ones and too few of the good ones.
Andrew Weil, M.D.
« Last Edit: December 31, 1969, 07:00:00 PM by Guest »
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Offline try another castle

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« Reply #2 on: March 25, 2006, 11:38:00 PM »
Quote
We are faced with a paradox, says researchers in an accompanying editorial. Health recommendations advise increased consumption of oily fish and fish oils. However, industrial fishing has depleted the world's fish stocks by some 90 percent since 1950, and rising fish prices reduce affordability particularly for people with low incomes.


Well, the oil that is in fish oil capsules come from fish farms, so I don't really know how that will affect anything. In addition, a bottle of 120 high quality, low stink factor fish oil capsules costs about six dollars.

These are the kind I get. They don't smell like fish at all, like a lot of other fish oil products do, which is nice. If anything, they are rather lemony. But I think the real plus is the price. I take about three a day.

I don't use them for heart or cancer issues, however. I use them because my doctor suggested them as an additional supplement for bipolar, because it apparently helps with mood stabilization. I have no idea if a similar study would yield similar results to the one just done about the health benefits, though. Possibly.

I just started taking them about a week ago, so it might be too soon to see any positive results. (If there are even going to be any.)

Anyway, it couldn't hurt. There have been several studies that state that at the very least, you want your omega 3s to be in higher proportion to your omega 6s, and people in western worlds tend to have a rather high amount of omega 6s in their system. (This is what deborah talked about. Need three omega 6s to one omega 3, and currently, westerners have about 10-20 omega 6s to omega 3s.) I can't remember the study that talked about this. My shrink gave me a copy of it, but I can't find it. So really, regardless of the other benefits omega 3s might have, it's good to increase our intake because our western diet needs it.

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[ This Message was edited by: sorry... try another castle on 2006-03-25 20:40 ]
« Last Edit: December 31, 1969, 07:00:00 PM by Guest »

Offline Anonymous

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« Reply #3 on: March 26, 2006, 09:22:00 AM »
Castle, after a week of fish oil, you might feel a little something, and after 3 weeks, there should be a noticeable difference. It might not be a lightning bolt, but all teh sudeen other people will comment that you are much less emotional.

Sometimes I wish I could take a drug that would stimulate mild mania that lasts... for constant energy, creativity, and a wee bit of cockiness. (But not enough to get me in any real truoble.)
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Offline try another castle

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« Reply #4 on: March 26, 2006, 07:45:00 PM »
No shit. I'd love to be able to have me some of that, so I'd actually  have some more motivation to do my work again. It's a struggle just to keep my head above water as it stands now.
« Last Edit: December 31, 1969, 07:00:00 PM by Guest »