Researchers test molecularly distilled fish oil supplements for industrial pollutants.
Chemical obesogens in the food supply may be contributing to the obesity epidemic.
Fact of fiction: fish oil decreases inflammation. It better—that’s a main reason people take it. But it’s not true… No effect of fish oil supplementation on inflammatory markers. This randomized, double-blind placebo-controlled intervention trial showed no effect of a whopping dose of fish oil on markers of inflammation in the blood. If anything, there was a trend that all serum inflammatory markers tended to increase after fish oil.
Wait a second. The whole reason people are told to eat fish, told to take fish oil is that the long chain omega 3 fatty acids like DHA are anti-inflammatory. So there must be something in the fish oil counteracting the good stuff and increasing inflammation, and it’s likely the industrial pollutants, such as PCBs d insecticides.
We now know, that PCBs can induce the kind of inflammation that promotes obesity and heart disease. It’s the same reason polar bears are now suffering from chronic inflammation: the industrial contaminants in our oceans that build up in fat. And so when we swallow capsules containing straight fish fat it puts us at the same tenuous polar bear position at the top of the food chain.
So, what about distilled fish oil? You’ll see things like this: molecularly distilled. Molecularly distilled for maximum purity. Well, researchers put fish oil distillation to the test last year. Fact or fiction, fish oil is safe—but only if it’s distilled. Fiction. It’s not safe.
They found the same PCBs and insecticides, even in the supposedly “PBC-free” fish oil. And the exact same levels of other industrial pollutants. The bottom-line: “This suggests that the commercial molecular distillation treatment used for removal of toxic contaminants is only effective for some of the contaminants. So, they conclude, that you have to balance the trade-off between risks and benefits, especially given how ineffective current fish oil treatments are at removing some of these contaminants.
That’s why I recommend the algae-based DHA—a win-win for humans, so you can get the benefits without any of the risk.
Because our oceans are so polluted, even when you buy distilled fish oil… you can’t get off the hook.
To see any graphs, charts, graphics, images, and quotes to which Dr. Greger may be referring watch the above video. This is just an approximation of the audio contributed by veganmontreal.
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G. K. Pot, I. A. Brouwer, A. Enneman, G. T. Rijkers, E. Kampman, and A. Geelen. No effect of fish oil supplementation on serum inflammatory markers and their interrelationships: A randomized controlled trial in healthy, middle-aged individuals. Eur J Clin Nutr, 63(11):1353-1359, 2009.
V. Arsenescu, R. I. Arsenescu, V. King, H. Swanson, and L. A. Cassis. Polychlorinated biphenyl-77 induces adipocyte differentiation and proinflammatory adipokines and promotes obesity and atherosclerosis. Environ. Health Perspect., 116(6):761-768, 2008.
Christian Sonne, Rune Dietz, Pall S. Leifsson, Erik W. Born, Robert J. Letcher, Maja Kirkegaard, Derek C. G. Muir, Frank F. Riget, Lars Hyldstrup. Do Organohalogen Contaminants Contribute to Histopathology in Liver from East Greenland Polar Bears (Urses maritimus). Environ Health Perspect. 2005 November; 113(11): 1569–1574.
E. Hoh, S. J. Lehotay, K. C. Pangallo, K. Mastovska, H. L. Ngo, C. M. Reddy, and W. Vetter. Simultaneous quantitation of multiple classes of organohalogen compounds in fish oils with direct sample introduction comprehensive two-dimensional gas chromatography and time-of-flight mass spectrometry. J. Agric. Food. Chem., 57(7):2653-2660, 2009.
Please feel free to post any ask-the-doctor type questions here in the comments section and I’d be happy to try to answer them. And check out the other videos on fish oil. Also, there are 1,686 other subjects covered in the rest of my videos--please feel free to explore them as well!
For some context, please check out my associated blog posts: EPA dioxin limit has National Chicken Council worried products could be declared “unfit for consumption”. and Treating Crohn’s Disease With Diet.
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Due to the state of the world's oceans, human biomarkers for fish consumption now include dioxins, PCBs, and mercury.
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