Re: crave carbs

"Ron Peterson" <ron@xxxxxxxxxxxxxx> wrote in part:


Susan wrote:
x-no-archive: yes

Ron Peterson wrote:
Jim Chinnis wrote:

What's your best study cite that shows saturated fat is bad in terms of
cardiovascular disease? I'm not being combative on this, I'd just like to
know so I can consider it.

http://www.hsph.harvard.edu/reviews/transfats.html seems to make the
point. It's not what I would call a study, but it seems to me a
synopsis of medical opinion that needs strong evidence to change.

Opinions aren't evidence.

No, but it's a good idea to check with the experts firtst.

Well, your best shot was an expert opinion that certain polyunsaturated fats
are deadly. That doesn't exactly establish that saturated fats are.

You might want to check out the following study:
http://www.ajcn.org/cgi/reprint/72/4/912 which concludes that diets
high in saturated fat and monounsaturated fats are less healthy than
other diets.

It's a prospective cohort study, not a randomized trial of any sort.
Randomized trials are hard to come by for major types of diet, for obvious
reasons, but cohort studies are extremely weak. One never really know which
factors (including unconsidered ones) cause the differences that are
observed.

What the paper says in that regard is:

"because there are many potential
differences in nutrients between dietary patterns, this
approach cannot be specific about the particular nutrients
responsible for the observed differences in disease risk, and thus
it may not be very informative about biological relations between
dietary components and disease risk."

I agree.

They go on somewhat speculatively anyway:

"In conclusion, our data suggest that 2 dietary patterns derived
from food consumption data assessed by the FFQ significantly
predict the incidence of CHD, independent of other lifestyle
variables. This study provided strong evidence that a diet high in
vegetables, fruit, legumes, whole grains, fish, and poultry and
low in red meat, processed meat, high-fat dairy products, and
refined grains may reduce the risk of CHD."

I guess one can interpret the above to be because red meats, processed
meats, and high-fat dairy have higher saturated fat than fruit, vegetables,
fish, etc. But of course they differ in other ways as well. And the people
who choose to be heavy consumers of red meat instead of vegetables and fish
differ in others ways from those who choose the opposite. There's no way
that the factor analysis captured all those differences.

I personally think that red meat may be hazardous. But the hazard may be
mostly from the feedlot practices that produce it and that transform the
fatty acid profile. I don't know, and I don't think anyone else does.

Full-fat dairy is a similar problem. If the conclusion is correct, and not
spurious, is it due to the grain-based dairy industy's methods or to the
saturated fat in the milk from foraging cows? We don't know.

I do think that full fat dairy or red meat from the supermarket is a bad
idea...as is a bagel.
--
Jim Chinnis Warrenton, Virginia, USA jchinnis@xxxxxxxxxxxx
.

Relevant Pages

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