Archived

This topic is now archived and is closed to further replies.

zeb

Saturated Fat and Heart Disease

3 posts in this topic

Saturated Fat and Heart Disease ... Not a Cause of CHD, CVD or Stroke

 

Saturated Fat and Heart Disease

 

by Dwight C. Lundell M.D.

 

Does the thought of a steak, bacon and eggs, or real milk make you cringe thinking you're instantly clogging up your arteries? How many times have you seen physicians and nutritionists write "artery clogging saturated fats"? For the last 40 years the dietary instructions from governments and other authoritative bodies have told us to avoid all animal fats.

 

Americans took the message seriously and complied. Average fat consumption decreased, average blood cholesterol levels decreased but their rate of heart disease has continued to rise; the cost of its treatment has continued to rise. Now, in 2011 we have 24 MILLION people diagnosed with diabetes and another 65 million with pre-diabetes and an epidemic of obesity now afflicting over 65% of the population.

 

The evidence continues to mount that there's no benefit and probable harm from a low fat diet. Two recent examples, the Women's Health Initiative which studied 48,835 women demonstrating no benefit from a low fat diet in terms of heart disease or breast cancer. (Ref 1 ).

 

The Nurses' Health Study which has followed 90,000 female health professionals, once again demonstrated no reduction in heart disease or cancer, from a low-fat diet. ( Ref 2 ).

 

Even the famous Framingham study now admits there is no association between dietary fat and heart disease and indeed the association of elevated cholesterol and heart disease is limited to a small segment of the study population. ( Ref 3 ).

 

The January 2009 American Heart Journal reported that of the 137,000 people admitted to over 500 hospitals in the United States with heart attack, nearly 75% had "normal" LDL cholesterol levels, that is below 130 ( see cholesterol converter for mg / dL to mmol / L conversion ).

 

The evidence against saturated fat has always been circumstantial. That is, saturated fat was said to elevate blood cholesterol and elevated blood cholesterol was said to cause heart disease therefore saturated fat would cause heart disease. There never has been any direct evidence that saturated fat caused heart disease or even a mechanism whereby heart disease would happen.

 

Although there are more than a dozen types of saturated fat, humans predominantly consume three; stearic acid, palmitic acid, and lauric acid. These three fats make up 95% of the saturated fat in a piece of prime rib, a slice of bacon, a piece of chicken skin, and nearly 70% of that in butter and whole milk.

 

It is well established that stearic acid has no affect on cholesterol levels. In fact stearic acid is converted in the liver to oleic acid which is monounsaturated like olive oil and said to be healthy. Most scientists now consider stearic acid to be benign or potentially beneficial. Palmitic and lauric acid do raise LDL cholesterol levels, but they also raise HDL cholesterol levels, and therefore may be beneficial.

 

Still worried about clogging up your arteries? The question reflects how most people today have become conditioned to eliminate fat from their diet for fear of clogging their arteries. With doctors and medical establishments recommending the elimination of saturated fat, nutritionists and other authors repeating the phrase "artery clogging saturated fats" the media certainly follows and we have formed a deep ingrained belief that saturated fat is evil and unhealthy.

 

In March of 2009, researchers from the U.S. National Cancer Institute reported that those whose diets contained the highest proportion of red or processed meat had a higher overall risk of death and specifically a higher risk of cancer and heart disease than those who ate the least processed or red meat. ( Ref 4 ).

 

The press had a field day as the news circulated the wires quickly. Here are a few of the headlines:

"Eating red meat linked to early death, study finds"

"Study shows red meat consumption linked to higher risk of dying from cancer, heart disease"

"Death linked to too much red meat"

 

Dr. Michael R. Eades wrote a brilliant reply to the fault in this study and the media overreaction in a blog titled Meat and Mortality. ( Ref 5 ).

 

Here is a brief excerpt:

 

"At the same time that this paper appeared, showing increased red meat consumption to be tied to a slight increased risk of death (and showing that those subjects eating white meat had less risk), a couple of other papers came out in the online pre-publication section of the American Journal of Clinical Nutrition (AJCN), arguably the world's most prestigious nutritional scientific journal.

 

These two AJCN papers saw the light of day at around the same time as this highly-publicized study on meat and mortality, but demonstrated the opposite results. They got no press coverage whatsoever. Which proves what I've been saying all along: the press is biased against meat in general, and especially against red meat."

 

I completely agree with Dr. Eades about the media bias and am surprised by authors who should know better and continue to write "artery clogging saturated fats".

 

The most recent definitive study of all the competent studies regarding saturated fats and heart disease called a meta-analysis and published in the AJCN January 13, 2010 shows that over a 5 to 23 year follow-up of 347,747 subjects, there is no association between the intake of saturated fat and heart disease or stroke.( Ref 6 ).

 

The bottom line is that there is no connection between the intake of saturated fat and heart disease or stroke. But there is a connection between the currently recommended high carbohydrate diet and heart disease and stroke.

 

So enjoy bacon and eggs and forgo the oatmeal and bagels, your LDL will come down your HDL will go up, your weight will go down and your satisfaction with your diet will go up. The low fat diet is the worst dietary advice in the last 50 years and it is the proximate cause of our epidemics of heart disease, diabetes and obesity.

 

Accurate knowledge cannot come from reading abstracts of articles or reporters' interpretation of the abstract.

 

Dwight C. Lundell M.D.

The Cure For Heart Disease

Chief Medical Consultant, Asantae Inc.

Chief Medical Consultant at Real Weight | Is your Scale Lying?

 

Dr. Lundell's experience in Cardiovascular & Thoracic Surgery over the last 25 years includes certification by the American Board of Surgery, the American Board of Thoracic Surgery, and the Society of Thoracic Surgeons.

Dr. Lundell was a pioneer in off-pump coronary artery bypass or "beating heart" surgery reducing surgical complications and recovery times.

He has served as Chief resident at the University of Arizona and Yale University Hospitals and later served as Chief of Staff and Chief of Surgery.

He was one of the founding partners of the Lutheran Heart Hospital which became the second largest Heart hospital in the U.S.

 

Ref 1. http://www.pcrm.org/health/prevmed/pdfs/modest_diet.pdf

Ref 2. NHS :: The Nurses’ Health Study

Ref 3. Framingham Heart Study

Ref 4. Meat intake and mortality: a prospective study of ... [Arch Intern Med. 2009] - PubMed result

Ref 5. The Blog of Michael R. Eades, M.D. » Meat and mortality

Ref 6. Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease

 

February, 2011

Share this post


Link to post
Share on other sites

Also see

Meta-analysis of prospective cohort studies evalua... [Am J Clin Nutr. 2010] - PubMed result

 

PubMed

U.S. National Library of Medicine

National Institutes of Health

 

 

 

Am J Clin Nutr. 2010 Mar;91(3):535-46. Epub 2010 Jan 13.

 

Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease.

Siri-Tarino PW, Sun Q, Hu FB, Krauss RM.

 

Children's Hospital, Oakland Research Institute Oakland, CA, USA.

 

Comment in:

 

Am J Clin Nutr. 2010 Aug;92(2):458-9; author reply 459.

Am J Clin Nutr. 2010 Mar;91(3):497-9.

Am J Clin Nutr. 2010 Aug;92(2):459-60; author reply 460-1.

Abstract

BACKGROUND: A reduction in dietary saturated fat has generally been thought to improve cardiovascular health.

 

OBJECTIVE: The objective of this meta-analysis was to summarize the evidence related to the association of dietary saturated fat with risk of coronary heart disease (CHD), stroke, and cardiovascular disease (CVD; CHD inclusive of stroke) in prospective epidemiologic studies.

 

DESIGN: Twenty-one studies identified by searching MEDLINE and EMBASE databases and secondary referencing qualified for inclusion in this study. A random-effects model was used to derive composite relative risk estimates for CHD, stroke, and CVD.

 

RESULTS: During 5-23 y of follow-up of 347,747 subjects, 11,006 developed CHD or stroke. Intake of saturated fat was not associated with an increased risk of CHD, stroke, or CVD.

 

The pooled relative risk estimates that compared extreme quantiles of saturated fat intake were 1.07 (95% CI: 0.96, 1.19; P = 0.22) for CHD, 0.81 (95% CI: 0.62, 1.05; P = 0.11) for stroke, and 1.00 (95% CI: 0.89, 1.11; P = 0.95) for CVD. Consideration of age, sex, and study quality did not change the results.

 

CONCLUSIONS: A meta-analysis of prospective epidemiologic studies showed that there is no significant evidence for concluding that dietary saturated fat is associated with an increased risk of CHD or CVD. More data are needed to elucidate whether CVD risks are likely to be influenced by the specific nutrients used to replace saturated fat.

 

PMID: 20071648 [PubMed - indexed for MEDLINE]PMCID: PMC2824152 [Available on 2011/3/1]

 

Meta-analysis of prospective cohort studies evalua... [Am J Clin Nutr. 2010] - PubMed result

Share this post


Link to post
Share on other sites

Good read. Thanks for posting. Of course, a bunch of us here are walking proof of the truth of this.

Share this post


Link to post
Share on other sites