General fitness, health and nutrition · Public discussion

Saturated fat associated with higher homocysteine

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General fitness, health and nutrition
Published
5 July 2007
Last activity
9 July 2007
Original author
Juhana Harju
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25
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  1. Homocysteine is a moderate and independent risk factor of heart disease. In
    a new study high intake of saturated fatty acids was associated with higher
    plasma homocysteine. Fish oils were associated with reduced levels.

    -------------------------------------------------------------------------------------------------

    Dietary fat and plasma total homocysteine concentrations in 2 adult age
    groups: the Hordaland Homocysteine Study
    Paula Berstad, Svetlana V Konstantinova, Helga Refsum, Eha Nurk, Stein Emil
    Vollset, Grethe S Tell, Per M Ueland, Christian A Drevon and Giske Ursin

    Background: The intake of n-3 (formerly called omega-3) fatty acids (FAs)
    may be inversely associated with plasma total homocysteine (tHcy)
    concentrations, but the epidemiologic data are sparse.

    Objective: We examined the association between dietary fat and tHcy in a
    Norwegian population.

    Design: A cross-sectional, population-based study of 5917 subjects in 2 age
    groups (47-49 and 71-74 y old) was conducted with the use of food-frequency
    questionnaires and measurement of plasma tHcy concentrations.

    Results: The intake of saturated FAs (SFAs) was positively and significantly
    (P for trend < 0.001) associated with tHcy concentrations; the difference in
    plasma tHcy concentrations between the highest and lowest quartiles of SFAs
    was 8.8%. The intake of marine very-long-chain n-3 FAs was inversely
    associated with tHcy concentrations; the difference in plasma tHcy
    concentrations between the lowest and the highest quartiles was -5.0% (P for
    trend < 0.001). Intakes of total and monounsaturated fat also were
    positively associated with plasma tHcy concentrations (P for trend < 0.001
    and < 0.005, respectively), whereas the intake of polyunsaturated fat was
    positively associated with tHcy concentrations only in the younger subjects
    (P for trend = 0.03). The associations were weakened by additional
    adjustment for B vitamin intake but remained significant for SFA intake (P <
    0.001). When stratified for total B vitamin intake, the inverse association
    between tHcy concentrations and very-long-chain n-3 FAs was significant only
    in the highest quartile of B vitamin intake (P for trend = 0.001),
    regardless of supplement use.

    Conclusions: High intakes of SFAs are associated with high plasma
    concentrations of tHcy. The inverse association between dietary intakes of
    very-long-chain n-3 FAs and plasma tHcy concentrations is apparent only at
    high B vitamin intakes.

    http://www.ajcn.org/cgi/content/abstract/85/6/1598

    --
    Juhana

  2. x-no-archive: yes

    Juhana Harju said:

    Homocysteine is a moderate and independent risk factor of heart disease.

    No, it isn't.

    Susan

  3. x-no-archive: yes

    Juhana Harju wrote:

    No link has ever stood up to further scrutiny. Lowering homocysteine
    resulted in increased mortality.

    Clearly, whatever it's a marker for, it isn't causal itself.

    Susan

  4. Susan said:

    Juhana Harju wrote:

    Lowering homocysteine resulted in increased mortality.

    Not always, and now the question was not about lowering it by supplements.
    The orginal posting was about having a diet lower in saturated fats and
    higher in long-chain omega-3 fatty acids. That is a completely different
    thing.

    Quoted message said:

    Clearly, whatever it's a marker for, it isn't causal itself.

    I did not say anything about causality.

    --
    Juhana

  5. x-no-archive: yes

    Juhana Harju said:
    Susan said:

    Juhana Harju wrote:

    Lowering homocysteine resulted in increased mortality.

    Not always, and now the question was not about lowering it by
    supplements. The orginal posting was about having a diet lower in
    saturated fats and higher in long-chain omega-3 fatty acids. That is a
    completely different thing.

    Quoted message said:

    Clearly, whatever it's a marker for, it isn't causal itself.

    I did not say anything about causality.

    Such studies are useless wrt saturated fats unless they control for
    grass fed vs. feedlot animal products.

    Susan

  6. Susan said:
    Juhana Harju said:
    Susan said:

    Juhana Harju wrote:

    Lowering homocysteine resulted in increased mortality.

    Not always, and now the question was not about lowering it by
    supplements. The orginal posting was about having a diet lower in
    saturated fats and higher in long-chain omega-3 fatty acids. That is
    a completely different thing.

    Quoted message said:

    Clearly, whatever it's a marker for, it isn't causal itself.

    I did not say anything about causality.

    Such studies are useless wrt saturated fats unless they control for
    grass fed vs. feedlot animal products.

    That is just a way to evade the topic.

    --
    Juhana

  7. x-no-archive: yes

    Juhana Harju said:

    That is just a way to evade the topic.

    It IS the topic.

    There is no good evidence for any increased health risks from saturated
    fats.

    Further, the fat profiles from grass fed meat and dairy is extremely
    heart healthy, much more so than that from feedlot beef.

    All we have so far is research on feedlot animal fat which is much less
    healthy, and still, it's what you eat with the fat, not the fat that has
    been proven to cause the risks.

    Susan

  8. It's not the SFAs, except in terms of "associations," "links," or
    "correlations." If SFAs were so bad, where is all the "associated"
    disease amongst those who consume SFA-rich, but PUFA-poor diets? They
    are studying SFAs in the context of typical Western diets, where
    people don't eat much coconut, but do eat plenty of meat. There is no
    biochemical connection between homocysteine and SFAs. The reason they
    don't understand is because they are not isolating the various
    molecules and determining which are dangerous. More insightful
    researchers have demonstrated that a PUFA-rich diet and the HCAs
    generated in cooked meat are a very dangerous combination. To see
    these kinds of studies, go to my free site and read the essay about
    saturated fatty acids being the solution, not the problem:

    http://groups.msn.com/TheScientificDebateForum-

  9. Susan said:

    x-no-archive: yes

    Juhana Harju said:

    That is just a way to evade the topic.

    Quoted message said:

    There is no good evidence for any increased health risks from saturated
    fats.

    There's plenty of evidence.

    Quoted message said:

    Further, the fat profiles from grass fed meat and dairy is extremely
    heart healthy, much more so than that from feedlot beef.

    http://www.csuchico.edu/agr/grassfedbeef/health-benefits/index.html
    shows that it's better, but not extremely better. The reason its
    better is because of increased omega 3 fatty acid content.

    Quoted message said:

    All we have so far is research on feedlot animal fat which is much less
    healthy, and still, it's what you eat with the fat, not the fat that has
    been proven to cause the risks.

    What nutrition component do you think can lead to CVD?

    --
    Ron

  10. x-no-archive: yes

    Ron Peterson said:

    http://www.csuchico.edu/agr/grassfedbeef/health-benefits/index.html
    shows that it's better, but not extremely better. The reason its
    better is because of increased omega 3 fatty acid content.

    That's not the only reason. It's also has higher CLA and lower
    arachidonic acid.

    Quoted message said:
    Quoted message said:

    All we have so far is research on feedlot animal fat which is much less
    healthy, and still, it's what you eat with the fat, not the fat that has
    been proven to cause the risks.

    What nutrition component do you think can lead to CVD?

    High glycemic load; starch and sugar and the resultant oxidative stress.

    Susan

  11. Susan said:
    Juhana Harju said:

    That is just a way to evade the topic.

    It IS the topic.

    There is no good evidence for any increased health risks from
    saturated fats.

    I just provided some further evidence by posting two studies but you are
    evading the subject because you are denying that which is evident. However,
    I completely understand the reasons you are so evasive. Because of your
    health reasons you are a low-carber who is favouring animal fats, saturated
    fats among them. So you have hard time when you see any contrary evidence.
    You should notice that I am not denying the obvious health benefits of
    low-carbing in achieving better glycemic control. But the subject is
    different now.

    --
    Juhana

  12. In 2000 I had my blood lipids checked. For a several of days prior
    I had been eating raw coconut. My HDL was 70 and the Doc
    said even though my total cholesterol was ~ 230 my blood lipids
    were excellent. The next time I was tested the HDL was down
    to 38 and I had been eating somewhat more conventionally.
    Granted at the time I was very stressed so there were other
    factors.

    I also have suspect heated polyunsaturated fats are worse
    than the same fats if unheated. For example a raw sesame
    or sunflower seed versus sesame oil or sunflower oil.

    Butter is thought of as saturated but it tends to go
    rancid rather rapidly. Certainly frying with butter, would
    be a way to up one's toxic oxysterol exposure.

    I've tried coconut oil for cooking and wasn't overly impressed.
    It seems to disappear into the food more than other fats.
    I keep aiming to cook a pie and try it in the crust, it would have
    to be better than hydrogenated lard.

    Quoted message said:

    It's not the SFAs, except in terms of "associations," "links," or
    "correlations." If SFAs were so bad, where is all the "associated"
    disease amongst those who consume SFA-rich, but PUFA-poor diets? They
    are studying SFAs in the context of typical Western diets, where
    people don't eat much coconut, but do eat plenty of meat. There is no
    biochemical connection between homocysteine and SFAs. The reason they
    don't understand is because they are not isolating the various
    molecules and determining which are dangerous. More insightful
    researchers have demonstrated that a PUFA-rich diet and the HCAs
    generated in cooked meat are a very dangerous combination. To see
    these kinds of studies, go to my free site and read the essay about
    saturated fatty acids being the solution, not the problem:

    http://groups.msn.com/TheScientificDebateForum-

  13. Yes, it is.

    Now that is my equally rich response :-)

    Susan said:

    x-no-archive: yes

    Juhana Harju said:

    Homocysteine is a moderate and independent risk factor of heart disease.

    No, it isn't.

    Susan

  14. I see that as an unwarrented conclusion for the bulk of the
    population.
    Most people will be eating feed lot animals and their fat whatever it
    is
    seems less than optimal.

    Susan said:

    x-no-archive: yes

    Juhana Harju said:

    Susan wrote:

    Quoted message said:
    Quoted message said:

    Juhana Harju wrote:

    Quoted message said:
    Quoted message said:

    Lowering homocysteine resulted in increased mortality.

    Quoted message said:

    Not always, and now the question was not about lowering it by
    supplements. The orginal posting was about having a diet lower in
    saturated fats and higher in long-chain omega-3 fatty acids. That is a
    completely different thing.

    Quoted message said:
    Quoted message said:

    Clearly, whatever it's a marker for, it isn't causal itself.

    Quoted message said:

    I did not say anything about causality.

    Such studies are useless wrt saturated fats unless they control for
    grass fed vs. feedlot animal products.

    Susan

  15. x-no-archive: yes

    Quoted message said:

    I see that as an unwarrented conclusion for the bulk of the
    population.
    Most people will be eating feed lot animals and their fat whatever it
    is
    seems less than optimal.

    So what? That doesn't suggest that saturated fat is bad. only that
    feedlot animal foods are bad.

    Susan

  16. x-no-archive: yes

    Quoted message said:


    Do you have the reference on lowering homocysteine increasing
    mortality?

    Try googling this group and Jim Chinnis; he's a scientist who's
    reviewed the research due to his own former homocysteine concerns and
    presented conclusions about it here, including, IIRC, mentions of
    increased mortality, and he and David Rind have discussed publications
    about it on this group.

    Susan

  17. x-no-archive: yes

    Quoted message said:

    Yes, it is.

    Now that is my equally rich response :-)

    We've had the discssion here ad nauseum; that's what it's come down to.

    :-)

    Susan

  18. x-no-archvie: yes

    Juhana Harju said:
    Susan said:
    Juhana Harju said:

    That is just a way to evade the topic.

    It IS the topic.

    There is no good evidence for any increased health risks from
    saturated fats.

    I just provided some further evidence by posting two studies but you are
    evading the subject because you are denying that which is evident.
    However, I completely understand the reasons you are so evasive. Because
    of your health reasons you are a low-carber who is favouring animal
    fats, saturated fats among them. So you have hard time when you see any
    contrary evidence. You should notice that I am not denying the obvious
    health benefits of low-carbing in achieving better glycemic control. But
    the subject is different now.

    [censored]. I've provide citations ad nauseum to rebut you, but you don't
    read them, you just provide more unsupported opinion pieces that are not
    supported by data or methodology or well controlled.

    I've got a low tolerance for small mindedness.

    Susan

  19. Susan said:

    x-no-archvie: yes

    Juhana Harju said:
    Susan said:

    Juhana Harju wrote:

    > That is just a way to evade the topic.

    It IS the topic.

    There is no good evidence for any increased health risks from
    saturated fats.

    I just provided some further evidence by posting two studies but you
    are evading the subject because you are denying that which is
    evident. However, I completely understand the reasons you are so
    evasive. Because of your health reasons you are a low-carber who is
    favouring animal fats, saturated fats among them. So you have hard
    time when you see any contrary evidence. You should notice that I am
    not denying the obvious health benefits of low-carbing in achieving
    better glycemic control. But the subject is different now.

    [censored]. I've provide citations ad nauseum to rebut you, but you
    don't read them, you just provide more unsupported opinion pieces
    that are not supported by data or methodology or well controlled.

    I've got a low tolerance for small mindedness.

    In that case I encourage you to use killfile and not to respond to my
    postings anymore. I would not loose anything.

    --
    Juhana

  20. x-no-archive: yes

    Juhana Harju said:

    In that case I encourage you to use killfile and not to respond to my
    postings anymore. I would not loose anything.

    Actually, I've had you KF'ed for a long time, but sometimes the feature
    on Thunderbird slips up. Then I see your disinformation and feel
    compelled to respond.

    Susan

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