General fitness, health and nutrition · Public discussion

Re: Omega 3 required amounts

Started by John Sankey · · Last activity · 4 posts · 326 views

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General fitness, health and nutrition
Published
13 April 2005
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14 April 2005
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John Sankey
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  1. You'll find some notes on optimal amounts of omega 3 & 6 at
    http://sankey.ws/dietref.html
    In particular, note the reference to the limited conversion of short-
    chain (vegetable) omega 3 to the long chains required by our brains.

  2. There is not one piece of good scientific evidence that an adult human
    who does not want to (or cannot become) pregnant needs any
    polyunsaturated fatty acids in the diet. Your body makes its own
    polyunsaturate, the Mead acid, and that is all you need, and that is
    the most healthy situation. Unless you eat all "fat free" foods, you
    will get some trace amounts of polyunsaturates, but your body can
    handle that. If you eat more than a trace amount of PUFAs, your body
    incorporates AA in body tissues, and you are then assured of getting
    one or another "chronic disease," if you live that long. I have
    challenged people over and over again to cite a paper that demonstrates
    that dietary PUFAs are "essential," and never has anyone done so. It
    is all based on a flawed rat experiment from 1903 (Burr & Burr). I
    have avoided PUFAs for a few years now, and my body is in better shape
    than ever before.

  3. On 13 Apr 2005 13:14:41 -0700, "montygram" <[email hidden]>

    Quoted message said:

    is all based on a flawed rat experiment from 1903 (Burr & Burr). I

    That experiment gets older and older :-)

    Since you are so completely obsessed on the matter of no need of EFA
    in diet, so why not try total enteral feeding, completely free of PUFA
    yourself. The deficiency was quite wellknown side effect. (Today such
    nutrition also contain both omega-6 and omega-3 so you have to tell
    them that you want it completely free of PUFA)

    Other people should definitively not try this treatment since it may
    be life threatening in long run.

  4. montygram said:

    There is not one piece of good scientific evidence that an adult


    human

    Quoted message said:

    who does not want to (or cannot become) pregnant needs any
    polyunsaturated fatty acids in the diet.

    Your memory seems to be getting worse. Here's a repost of what I quoted
    back in December:

    "Thirty years later, Hansen et al. [140] were the first to describe
    EFAD in humans. They observed unsatisfactory growth rates and dryness
    of the
    skin in many infants on low LA intakes. EFAD has been most extensively
    described in subjects on fat-free total parenteral nutrition (TPN)
    [141-147]. For example, O'Neill et al. [142] reported on 28 patients,
    ranging from newborns to 66 years old, who received fat-free TPN. LA
    levels fell rapidly, followed by AA. In most of the patients the
    20:3n9/20:4n6 ratio (a biochemical marker for EFAD) had
    increased after a few weeks above the 0.4 criterion [148], followed
    approximately one week later by clinical signs of a scaly and thin
    skin, and hair loss. In addition to these classical EFAD symptoms,
    many other biological and behavioural changes have been documented
    [149-151]"

    Two of the refs:

    Wene JD, Connor WE, DenBesten L. The development of essential fatty
    acid deficiency in healthy men fed fat-free diets intravenously and
    orally. J Clin Invest 1975;56:127-34

    O'Neill JA, Caldwell MD, Meng HC. Essential fatty acid deficiency in
    surgical patients. Ann Surg 1977;185:535-41

    Quoted message said:

    Your body makes its own
    polyunsaturate, the Mead acid, and that is all you need, and that is
    the most healthy situation.

    Unless you believe the quote above which says that when the ratio of
    Mead's acid to Arachidonic acid rises above 0.4, approximately a week
    later deficiency symptoms are observed i.e. more Mead's and less AA
    leads to clinical symptoms.

    Quoted message said:

    Unless you eat all "fat free" foods, you
    will get some trace amounts of polyunsaturates, but your body can
    handle that. If you eat more than a trace amount of PUFAs, your body
    incorporates AA in body tissues,

    Not if you're eating more omega three which is what the original poster
    was asking. Omega three displaces AA.

    Quoted message said:

    and you are then assured of getting
    one or another "chronic disease," if you live that long. I have
    challenged people over and over again to cite a paper that


    demonstrates

    Quoted message said:

    that dietary PUFAs are "essential," and never has anyone done so.

    You mean you can't remember (or refuse to admit) anyone doing so.
    Different thing entirely.

    Quoted message said:

    It
    is all based on a flawed rat experiment from 1903 (Burr & Burr). I
    have avoided PUFAs for a few years now, and my body is in better


    shape

    Quoted message said:

    than ever before.

    Given the Disorders you claim to have had before, that's not actually
    saying very much.

    MattLB

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