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posted by martyb on Wednesday January 31 2018, @11:26PM   Printer-friendly
from the Go-Fish! dept.

Prof. David Ma has discovered that marine-based omega-3s are eight times more effective at inhibiting tumour development and growth.

"This study is the first to compare the cancer-fighting potency of plant- versus marine-derived omega-3s on breast tumour development," said the professor in the Department of Human Health and Nutritional Sciences. "There is evidence that both omega-3s from plants and marine sources are protective against cancer and we wanted to determine which form is more effective."

[...] Published in the Journal of Nutritional Biochemistry, the study involved feeding the different types of omega-3s to mice with a highly aggressive form of human breast cancer called HER-2. HER-2 affects 25per cent of women and has a poor prognosis.

[...] Ma found overall exposure to marine-based omega-3s reduced the size of the tumours by 60 to 70 per cent and the number of tumours by 30 per cent.

However, higher doses of the plant-based fatty acid were required to deliver the same impact as the marine-based omega-3s.

Source: https://news.uoguelph.ca/2018/01/choose-omega-3s-fish-flax-cancer-prevention-study-finds/

Journal Reference: Jiajie Liu, Salma A. Abdelmagid, Christopher J. Pinelli, Jennifer M. Monk, Danyelle M. Liddle, Lyn M. Hillyer, Barbora Hucik, Anjali Silva, Sanjeena Subedi, Geoffrey A. Wood, Lindsay E. Robinson, William J. Muller, David W.L. Ma. Marine fish oil is more potent than plant based n-3 polyunsaturated fatty acids in the prevention of mammary tumours. The Journal of Nutritional Biochemistry, 2017; DOI: 10.1016/j.jnutbio.2017.12.011


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  • (Score: 3, Interesting) by acid andy on Wednesday January 31 2018, @11:57PM (25 children)

    by acid andy (1683) on Wednesday January 31 2018, @11:57PM (#631260) Homepage Journal

    Choose flax over fish for the prevention of the suffocation of aquatic organisms. Canola oil has decent amounts of omega-3 and 6 as well and is often cheaper than flax.

    --
    If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?
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  • (Score: 2) by DannyB on Thursday February 01 2018, @12:04AM (14 children)

    by DannyB (5839) Subscriber Badge on Thursday February 01 2018, @12:04AM (#631263) Journal

    Could you explain further please?

    --
    The lower I set my standards the more accomplishments I have.
    • (Score: 3, Interesting) by acid andy on Thursday February 01 2018, @12:14AM (13 children)

      by acid andy (1683) on Thursday February 01 2018, @12:14AM (#631267) Homepage Journal

      It was my slightly snarky way of promoting a vegan diet. Flaxseed or canola oil are commonly included in vegan diets because the body needs the fatty acids. I did think they were involved in the lubrication of joints but I can't find a reference for this so maybe that's wrong.

      --
      If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?
      • (Score: 2) by beckett on Thursday February 01 2018, @12:21AM (12 children)

        by beckett (1115) on Thursday February 01 2018, @12:21AM (#631269)

        from my perspective, you're promoting a terrestrial diet; the primary source of marine PUFAs are from marine algae [nih.gov], which can be produced on an industrial scale. [sciencedirect.com]

        • (Score: 2) by acid andy on Thursday February 01 2018, @12:30AM (11 children)

          by acid andy (1683) on Thursday February 01 2018, @12:30AM (#631271) Homepage Journal

          That's interesting but TFS specifically mentions "Marine fish oil" and it looks like your links are more concerned with fish feeding on the algae rather than humans although algae could be tasty. Nom nom nom!

          --
          If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?
          • (Score: 3, Informative) by boltronics on Thursday February 01 2018, @02:08AM (9 children)

            by boltronics (580) on Thursday February 01 2018, @02:08AM (#631294) Homepage Journal

            I heard that fish get their Omega 3 from the algae, so it's probably better to go straight to the source and get your Omega 3 derived directly from algae. You can purchase it in tablet form (which I do), but it's expensive.

            As a vegan, I'm not going to purchase fish oil tablets so it doesn't matter to me (in a practical sense) if that's incorrect.

            I know a lot of people say Omega 3 tablets are a waste of money and are completely unnecessary, but there's a lot of conflicting information out there.

            --
            It's GNU/Linux dammit!
            • (Score: 2) by c0lo on Thursday February 01 2018, @02:33AM (7 children)

              by c0lo (156) Subscriber Badge on Thursday February 01 2018, @02:33AM (#631301) Journal

              I heard that fish get their Omega 3 from the algae, so it's probably better to go straight to the source and get your Omega 3 derived directly from algae. You can purchase it in tablet form (which I do), but it's expensive.

              As a vegan,...

              Those capsules... are they vegan? Most of the time, they'll contain gelatin... a thing obtained from animal sources, pork skin mainly.

              E.g. Blackmores [blackmores.com.au] - scroll down to "A clear, yellow, oblong, soft gelatin capsule"

              --
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              • (Score: 2) by beckett on Thursday February 01 2018, @03:44AM (3 children)

                by beckett (1115) on Thursday February 01 2018, @03:44AM (#631331)

                vegan capsules are made from cellulose.

                • (Score: 2) by c0lo on Thursday February 01 2018, @09:44AM (2 children)

                  by c0lo (156) Subscriber Badge on Thursday February 01 2018, @09:44AM (#631390) Journal

                  I doubt cellulose is the only ingredient - human guts cannot break cellulose, therefore it needs to contain a binder.

                  --
                  https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
                  • (Score: 3, Informative) by beckett on Thursday February 01 2018, @09:59AM (1 child)

                    by beckett (1115) on Thursday February 01 2018, @09:59AM (#631396)

                    Nothing suggests the binder need to contain animal products: Water soluble cellulose derivatives exist, and could dissolve readily in the stomach fluids without enzymatic activity e.g. Hydroxyalkylcellulose is used as a binding agent, sodium carboxymethyl cellulose, Hydroxyethylcellulose are used as gelling agents.

                    • (Score: 2) by c0lo on Thursday February 01 2018, @11:29AM

                      by c0lo (156) Subscriber Badge on Thursday February 01 2018, @11:29AM (#631427) Journal

                      Nothing suggests the binder need to contain animal products:

                      Neither did I suggest that.
                      I only said that one cannot exclude formulations of soft gel capsules that contain animal products.

                      Water soluble cellulose derivatives exist, and could dissolve readily in the stomach fluids without enzymatic activity e.g. Hydroxyalkylcellulose is used as a binding agent, sodium carboxymethyl cellulose, Hydroxyethylcellulose are used as gelling agents.

                      +Informative.

                      Add to the above hydroxypropyl methylcellulose [wikipedia.org] if my understanding is correct [wikipedia.org]

                      --
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              • (Score: 2) by boltronics on Thursday February 01 2018, @03:59AM (2 children)

                by boltronics (580) on Thursday February 01 2018, @03:59AM (#631336) Homepage Journal
                • (Score: 2) by c0lo on Thursday February 01 2018, @09:41AM (1 child)

                  by c0lo (156) Subscriber Badge on Thursday February 01 2018, @09:41AM (#631389) Journal

                  Other than the 'for vegans' promise, I see no mention about the substance the capsule is made of.
                  The biuret test [wikipedia.org]** will indicate if there is any protein in it, it won't say however if those proteins are of animal origin.

                  ** Just in case you want to play with:
                    Sodium hydroxide and copper sulphate available at Bunnings. Sodium potassium tartrate - cream of tartar in layman speak - available at Coles/Woolworths in the baking sector.

                  --
                  https://www.youtube.com/watch?v=aoFiw2jMy-0 https://soylentnews.org/~MichaelDavidCrawford
                  • (Score: 2) by acid andy on Thursday February 01 2018, @11:59AM

                    by acid andy (1683) on Thursday February 01 2018, @11:59AM (#631436) Homepage Journal

                    Other than the 'for vegans' promise

                    This is the perennial scourge of anyone that chooses to follow a strict diet. You can choose to prepare all your meals from only the most basic ingredients (which incidentally often makes for more enjoyable and sometimes more cost effective, even healthier, meals) and often this is the path of least resistance for most food shopping, or else you're completely reliant on the honesty and accuracy of the food manufacturers and their suppliers.

                    I strongly suspect that huge numbers of food products have ingredients that do not reflect the labels. People have been bred to instinctively trust big business as authority figures. The whole thing becomes a pragmatic best guess process depending on what the particular consumer is comfortable with.

                    --
                    If a cat has kittens, does a rat have rittens, a bat bittens and a mat mittens?
            • (Score: 1, Informative) by Anonymous Coward on Thursday February 01 2018, @03:44PM

              by Anonymous Coward on Thursday February 01 2018, @03:44PM (#631501)

              I know a lot of people say Omega 3 tablets are a waste of money and are completely unnecessary, but there's a lot of conflicting information out there.

              This is probably because many Omega 3 supplements have rancid oil. Rotten fish oil is unlikely to be as good for you as fresh fish oil.

              I've broken open fish oil capsules from different suppliers and some smell rotten and some smell like fresh fish oil (should smell like fresh fish - e.g. faintly/slightly fishy, not strong and smelly).

              See: https://www.nature.com/articles/srep07928 [nature.com]
                https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681158/ [nih.gov]

              Probably similar thing for Flax seed oil- lots of polyunsaturated fats go rancid quite quickly.

          • (Score: 3, Interesting) by beckett on Thursday February 01 2018, @03:29AM

            by beckett (1115) on Thursday February 01 2018, @03:29AM (#631324)

            Marine fish oil is obtained up the food web by predators consuming other predators who consume algae. As with the terrestrial food web, the primary producers in the marine ecosystem are plants, and the primary source of energy in the tropic marine ecosystem is from the sun.

  • (Score: 3, Informative) by beckett on Thursday February 01 2018, @12:16AM (6 children)

    by beckett (1115) on Thursday February 01 2018, @12:16AM (#631268)

    What is the ratio of PUFA's in canola vs. flax. vs. lipids derived from marine sources, though? there's research that indicates it's the ratio between essential PUFA, rather than just the presence of PUFA in diets, that have downstream effects to human health. [nih.gov]

    • (Score: 1, Interesting) by Anonymous Coward on Thursday February 01 2018, @02:00AM (5 children)

      by Anonymous Coward on Thursday February 01 2018, @02:00AM (#631291)

      You know, you guys put an awful lot of work into this. Just eat what your mother puts on the table. And there's nothing wrong with Bacon/sausage and fried eggs sunny side up, and don't forget the buttered toast, slightly burnt.... Yummy!

      As a matter of fact, all of a sudden I got the munchies.

      I think all of you should just enjoy what you eat, and not think about getting hit by meteors. Now, if you'll excuse me, I'm gonna go make me some hot butter grits to go with that plate.

      PS. As for oil mix, I believe the ratio is still 50:1. It was back when I used to fill up the tanks.

      • (Score: 4, Informative) by beckett on Thursday February 01 2018, @03:41AM (4 children)

        by beckett (1115) on Thursday February 01 2018, @03:41AM (#631328)

        And there's nothing wrong with Bacon/sausage and fried eggs sunny side up, and don't forget the buttered toast, slightly burnt.... Yummy!

        perhaps you're just being funny, but a ketogenic diet minimizes sugars and carbs to to be effective in treating epilepsy, and was the primary treatment for epilepsy until big pharma. There is evidence that a ketogenic diet can help with the treatment of type II diabetes. [nih.gov] from the perspective of someone eating a ketogenic diet, the worst thing on your list for you is the toast, and the filler in the sausage.

        • (Score: 0) by Anonymous Coward on Thursday February 01 2018, @06:32AM (3 children)

          by Anonymous Coward on Thursday February 01 2018, @06:32AM (#631362)

          perhaps you're just being funny

          Perhaps... but all those epileptics, diabetics, and other sick people wouldn't survive a week in our house. Here the taste buds write the rules, and we'll live to be a hundred. Eating isn't supposed to be a chore. If you can't enjoy your food, there's little point in living.

          • (Score: 3, Touché) by beckett on Thursday February 01 2018, @08:47AM (2 children)

            by beckett (1115) on Thursday February 01 2018, @08:47AM (#631379)

            What's poison to one culture is dinner to another.

            Your household diet is likely a 'chore' to someone else who isn't you.

            • (Score: 0) by Anonymous Coward on Thursday February 01 2018, @03:06PM (1 child)

              by Anonymous Coward on Thursday February 01 2018, @03:06PM (#631488)

              Yeah, sure, life for sick people is high maintenance and not so much fun for all the things they can't do, and eat. I'm just saying healthy people can eat what they want with little consequence, aside from some heavy farting, which is also healthy. Keep the system loose, and you'll longer than a naked mole rat. Eating should make you feel good, not anxious about every little thing that can kill you.

              If there is a problem with our diet, it has more to do with the way we process food with all those chemicals, fertilizers, pesticides, hormones, etc, and of course the poor sanitation. That's where the poison and resulting cancers, and the setting off all those blood pressure and glucose alarms come from. It's what made all those people sick to begin with.

              • (Score: 2) by beckett on Thursday February 01 2018, @06:11PM

                by beckett (1115) on Thursday February 01 2018, @06:11PM (#631596)

                Yeah, sure, life for sick people is high maintenance and not so much fun for all the things they can't do, and eat.

                it's not just healthy vs. sick; it's that we have a wide biodiversity within our species, and everybody has different things they're allergic to, cannot eat, and do not find palatable. i'm specifically referring to our own individual biology, not just 'healthy vs. sick'.

                As before, what you find palatable and tasty other people may find inedible and unsustainable.

  • (Score: 3, Interesting) by DrkShadow on Thursday February 01 2018, @04:26AM (2 children)

    by DrkShadow (1404) on Thursday February 01 2018, @04:26AM (#631341)

    Canola oil: https://soylentnews.org/article.pl?sid=17/12/09/1631213 [soylentnews.org]

    ... associates the consumption of canola oil in the diet with worsened memory, worsened learning ability and weight gain in mice which model Alzheimer's disease.

    This was an article about how little is known about canola oil. It was only one of the two you listed, but I'm taking it that sometimes animal-sourced products are better for me. Flax I don't know about, but what's lying in wait.

    • (Score: 2) by hemocyanin on Thursday February 01 2018, @05:22AM

      by hemocyanin (186) on Thursday February 01 2018, @05:22AM (#631353) Journal

      With the flax? Probably not mercury.

    • (Score: 2) by beckett on Thursday February 01 2018, @08:56AM

      by beckett (1115) on Thursday February 01 2018, @08:56AM (#631381)

      I'm taking it that sometimes animal-sourced products are better for me.

      For one thing, it's easier for an omnivore/carnivore diet to cover all the needed macronutrients A carnivore could choose to eat red meat, chicken, fish (as in this study), eggs, milk products, which contain high concentrations of essential amino acids, which your body cannot produce. these proteins are needed to create hormones, enzyme, build muscles, and maintain body organs and tissues. Beans are usually the go-to for plant based diets, but are typically lower density compared to, say, red meat. they also are relatively low in tryptophan and methinonine. red meat is also high in B12, which should be supplimented in some types of vegatable based diets.