General fitness, health and nutrition · Public discussion

Red Meat & Colon Cancer

Started by Ruth · · Last activity · 6 posts · 646 views

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General fitness, health and nutrition
Published
12 January 2005
Last activity
1 February 2005
Original author
Ruth
Posts
6
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  1. Red Meat and Colon Cancer: News Stories Miss Real Point

    By Ruth Kava, Ph.D., R.D.

    It would be easy to infer from headlines on many news articles that
    eating red meat increases the risk of developing colon cancer. For
    example, "Red Meat increases Colon Cancer Risk," states one, while
    another trumpets "Red meat newly linked to colorectal cancer."

    In fact, the story is significantly more nuanced than such headlines
    (and many of the associated articles) make it seem.

    The source of the furor was a report published in the Journal of the
    American Medical Association (Chao A ,Thun MJ, Connell CJ, McCullough
    ML, et al. Meat consumption and risk of colorectal cancer. JAMA
    2004;293(2):172-182). It described the results of a major
    epidemiologic study by researchers associated with the American Cancer
    Society and Emory University.
    http://www.acsh.org/factsfears/newsID.492/news_detail.asp

  2. The thing I don't like is that, like most studies condemning red meat,
    they don't distinguish between the different types of red meat. Cured
    "lunch meat" is totally different, for example, than good quality roast
    beef. I'm sure that there is considerable difference in their
    carcinogenicity.

  3. <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    The thing I don't like is that, like most studies condemning red meat,
    they don't distinguish between the different types of red meat. Cured
    "lunch meat" is totally different, for example, than good quality roast
    beef. I'm sure that there is considerable difference in their
    carcinogenicity.

    And what about the difference between pastured grass fed beef and feed lot
    corn fed beef?

    René

  4. The Press often doesn't get it science right.
    It rarely asks hard questions on the topic
    of science or most other topic for that matter.

    Quoted message said:


    In fact, the story is significantly more nuanced than such headlines
    (and many of the associated articles) make it seem.

    Science articles are often nuanced even when they shouldn't be.
    With meat it is an issue of moderation, context, and cooking
    method.

    Quoted message said:

    The source of the furor was a report published in the Journal of the
    American Medical Association (Chao A ,Thun MJ, Connell CJ, McCullough
    ML, et al. Meat consumption and risk of colorectal cancer. JAMA
    2004;293(2):172-182). It described the results of a major
    epidemiologic study by researchers associated with the American Cancer
    Society and Emory University.

    <link snipped>

  5. The nasty combination in "red meat" is cholesterol and iron, though the
    unsaturated fatty acids don't help. There is also some arachidonic
    acid in all the cells, so you can't get that out by cutting the fat
    off. Then there's processing, transportation, and cooking techniques.
    It's no surprise that frying ground beef is rather unhealthy compared
    to boiled chicken breast, for example. Then there's the excess
    calories consumed, in addition to few (if any) anitoxidant-rich foods
    consumed. It's all about oxidative stress. The scientific literature
    is clear, just do a pubmed search for oxysterol or oxidized cholesterol
    and you'll see what I mean.

  6. "montygram" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    The nasty combination in "red meat" is cholesterol and iron, though the
    unsaturated fatty acids don't help. There is also some arachidonic
    acid in all the cells, so you can't get that out by cutting the fat
    off. Then there's processing, transportation, and cooking techniques.
    It's no surprise that frying ground beef is rather unhealthy compared
    to boiled chicken breast, for example. Then there's the excess
    calories consumed, in addition to few (if any) anitoxidant-rich foods
    consumed. It's all about oxidative stress. The scientific literature
    is clear, just do a pubmed search for oxysterol or oxidized cholesterol
    and you'll see what I mean.

    Powdered eggs and dried milk would likely be some
    of the foods richest in oxysterols. Many prepared
    foods contain these two products. Ground meat is
    a questionable food for a number of reasons. It is
    multisourced both in terms of cattle and nations.
    And as you say it likely does contain a little
    extra oxidation. Even quite conservative sources
    suggest the amount of beef to be eaten is the
    size of a deck of cards. I'll suggest pork and
    bacon have their downsides as well.

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