[ExI] enjoy your steaks!
William Flynn Wallace
foozler83 at gmail.com
Tue Apr 1 14:32:31 UTC 2014
(and maybe don't worry about your cholesterol, and look at the data
concerning cognitive decline and statins)
Nutrition experts have egg on their faces. For years, public health policy
has been to discourage consumption of saturated fat--or most any fat at all.
The diet-heart hypothesis <http://www.ncbi.nlm.nih.gov/pubmed/14998608> got
its start in the 1950s. Ancel Keys, PhD, and his colleagues collected
epidemiological data from around the world and decided that they showed a
connection between saturated fat consumption and high blood cholesterol,
and consequently, an elevated risk of heart disease.
The National Cholesterol Education
Program<http://www.cdc.gov/cholesterol/cholesterol_education_month.htm>,
the American Heart
Association<http://www.heart.org/HEARTORG/GettingHealthy/NutritionCenter/HealthyEating/The-American-Heart-Associations-Diet-and-Lifestyle-Recommendations_UCM_305855_Article.jsp>and
many other public health organizations promoted the idea that eating a
low-fat high-carb diet would reduce heart disease. A meta-analysis
involving 72 studies and over 600,000 participants now contradicts that
traditional wisdom. The researchers found no link between saturated fat
consumption and a higher risk of heart attacks and other cardiovascular
complications (*Annals of Internal Medicine*, March 18,
2014<http://annals.org/article.aspx?articleid=1846638>
).
Dietitians had told people to use margarine instead of
butter<https://blogs.commons.georgetown.edu/gufoodstudies/2013/06/13/good-fats-and-better-fats-revising-the-diet-heart-hypothesis/>and
polyunsaturated fats found in corn or safflower oil because they were
supposed to lower cholesterol and be heart healthy. The new analysis found
no cardiac benefit from such omega-6 rich fats. Trans-fatty acids like
those found in shortening and margarine up until a few years ago were
associated in the analysis with a higher incidence of heart disease.
This is not the first study to suggest the conventional sat-fat wisdom
might be wrong. The Sydney Diet Heart Study was conducted in Sydney,
Australia, at the height of the diet-heart hypothesis, between 1966 and
1973. In this research, the scientists recruited 458 men who had recently
had a heart attack and were therefore at high risk for a second cardiac
event. The men were divided into two groups: half continued with their
usual diet, while the other group was given safflower oil and margarine
made from safflower oil and told to use it instead of butter or animal
fats. The hypothesis, of course, was that the polyunsaturated safflower oil
would protect the men from a second heart attack, but the scientists ran
out of research money and the data were not fully analyzed until a research
team resurrected them last year (*BMJ*, online, Feb. 5,
2013<http://www.bmj.com/content/346/bmj.e8707>
).
The data showed that the men given safflower oil did have lower
cholesterol, but they were also 60 percent more likely to die during the
study, especially from heart disease. Of those getting the
safflower-supplemented diets, 16.3 percent died of heart attacks compared
to 10.1 percent of those eating their usual diets with butter and lard.
Too many of the dietary recommendations of the past half century were based
on belief rather than data. From the evils of eggs to the sins of sodium,
simple public health messages have been shown time and again to be
misleading.
So what guidelines should you use to follow a healthful diet? We think the
grandmothers got it right: real foods, lovingly prepared. It does take a
little longer to cook from scratch rather than eating out of a package, but
the taste and health benefits are big. To learn more about how to follow
this type of healthy diet, you may be interested in our books, *Recipes &
Remedies* <http://www.peoplespharmacy.com/recipesandremedies/> and*
Favorite Foods* <http://www.peoplespharmacy.com/favorite-foods/> (online at
PeoplesPharmacy.com <https://store.peoplespharmacy.com/books.html>).
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