Saturday, 28 February 2009

Red meat is a healthy food - particularly beef!

Over the last few days I've written about the dire health warnings from the World Cancer Research Fund UK and others about the dangers of 'red meat' in our diet. Despite another eight or so hours of trawling through their 1,082 references I'm still unable to find a single study that shows that red meat - real red meat - is any danger whatsoever.

As I discovered with NDNS 2000-2003 'red meat' in nutritionists' terms includes lasagne, curries, sweet and sour, meat spreads and pastes, pies, and cheeseburgers, complete with buns!

I think it's high time we all looked at what red meat in general, and beef in particular, really can do for us. As I said above, I've not been able to find any research that shows red meat is bad for us, so would I have any more luck in finding evidence that proves the reverse - that it's actually good for us? Just take a look!


Conjugated linoleic acid. A powerful anticarcinogen from animal fat sources. C, Scimeca JA, Thompson HJ. Cancer. 1994 Aug 1;74(3 Suppl):1050-4.
Conjugated linoleic acid is unique because it is present in food from animal sources, and its anticancer efficacy is expressed at concentrations close to human consumption levels. The efficacy of conjugated linoleic acid in mammary cancer prevention is independent of the level or type of fat in the diet.
Conjugated linoleic acid in animal fat can prevent cancer.

Stability of conjugated linoleic acid isomers in egg yolk lipids during frying. Food Chemistry. Volume 86, Issue 4, August 2004, Pages 531-535
The eggs, containing 4.0% CLA per gramme of egg yolk, were stored in a refrigerator at 0–4 °C for 6 months, while the egg yolks were fried in a pan at 160–180 °C for 40 s. Either storage for 6 months or frying for 40 s did not significantly change the composition of CLA in egg yolk.
Egg yolks are a good source of conjugated linoleic acid.

Role of diet on conjugated linoleic acid content of milk and meat. T. R. Dhiman*1, 1Department ofAnimal, Dairy and Veterinary Sciences, Utah State University, UT 84322-4815

Conjugated linoleic acid (CLA) occurs naturally in many foods. However, the principal dietary sources are meat, dairy products and other foods derived from ruminants. Research studies with animal models suggest that CLA reduces the risk of cancers at several sites (mammary tissue, prostrate, gastrointestinal tract, lung, and skin), reduces body fat and enhances growth of lean body mass. Fat from milk and beef contains an average 4.0 and 3.5mg CLA/g of fat, respectively.
Cows grazing on pasture had 500% more CLA content in milk compared with cows fed typical dairy cow diets containing conserved forage and grain in a 50:50 ratio. Raising beef cattle on forages and pasture with no grain supplementation can enhance the CLA content of beef.
Meat and dairy products from grass-fed cattle are high in conjugated linoleic acid, which can reduce the risk of cancers, reduce body fat, and produce a lean body.


C A N C E R...and...V I S I O N

Role of fatty acids in malignancy and visual impairment: epidemiological evidence and experimental studies. Tsubura A, Yuri T, Yoshizawa K, Uehara N, Takada H. Histol Histopathol. 2009 Feb;24(2):223-34.
SFAs such as palmitic acid and stearic acid show little or no tumor promoting effect, and the action of oleic acid, a MUFA, is inconclusive. SFAs such as palmitic acid and stearic acid show little or no tumor promoting effect, and the action of oleic acid, a MUFA, is inconclusive.
In addition to regulation of abnormal cell growth seen in cancers, fatty acids also control cell loss seen in degenerative eye diseases, such as degeneration of lens material in cataract and degeneration of photoreceptor cells in retinitis pigmentosa. Experiments suggest that n-6 PUFAs cause deleterious effects, while n-3 PUFAs result in beneficial effects on the lens and retina. In particular, docosahexaenoic acid is known to be effective in rescuing photoreceptor cells from damage.

Saturated fats [SFAs] do not help cancers to grow, and can control degenerative eye diseases. Polyunsaturates from vegetable sources [PUFAS] injure the eyes.



Reducing the serum cholesterol level with a diet high in animal fat. Newbold HL. South Med J. 1988 Jan;81(1):61
Multiple food allergies required a group of seven patients with elevated serum cholesterol levels to follow a diet in which most of the calories came from beef fat. Their diets contained no sucrose, milk, or grains. They were given nutritional supplements. This is the only group of people in recent times to follow such a diet.
During the study, the patients' triglyceride levels decreased from an average of 113 mg/dl to an average of 74 mg/dl; at the same time, their serum cholesterol levels fell from an average of 263 mg/dl [6.8 mmol/l] to an average of 189 mg/dl [4.89 mmol/l].
At the beginning of the study, six of the patients had an average high-density lipoprotein percentage of 21%. At the end of the study, the average had risen to 32%.
These findings raise an interesting question: are elevated serum cholesterol levels caused in part not by eating animal fat (an extremely "old food"), but by some factor in grains, sucrose, or milk ("new foods") that interferes with cholesterol metabolism?
Yes, "most of the calories came from beef fat" and blood cholesterol levels were reduced. This research has been around for over twenty years now, so why do today's nutritionists ignore it?
Could it be that there's no profit in beef fat for the diet industry or the pharmaceutical companies?


B L O O D ...G L U C O S E

An increase in dietary protein improves the blood glucose response in persons with type 2 diabetes.Gannon MC, Nuttall FQ, Saeed A, Jordan K, Hoover H. Am J Clin Nutr. 2003 Oct;78(4):671-2.
Total cholesterol, HDL-cholesterol, and LDL-cholesterol concentrations were essentially unchanged with the high-protein diet. However, the fasting triacylglycerol concentration decreased by 20% after 5 wk of the high-protein diet.
This is interesting, as very lean beef was used in this study, unlike the previous one with coeliacs. I'm no expert, but logic suggests that had beef with its normal fat been used, cholesterol may well have dropped as well, as in the coeliac study.

And if you live in Australia and don't have any cattle close by, kangaroo will do nicely.

Kangaroo meat - health secret revealed. Commonwealth Scientific and Industrial Research Organisation 2004 April 23.
CLA (conjugated linoleic acid) is found in dairy products, beef and lamb. CLA is produced in the stomach and tissues of ruminant animals such as sheep and cattle during the digestion process.
In trials, CLA has been shown to possess potential anti-carcinogenic and anti-diabetes properties, in addition to reducing obesity and atherosclerosis (high blood pressure).
The meat of Australia's bush kangaroo may be the highest known source of the healthy fat. Dairy milk was previously the highest known source of CLAs, followed by the fat of beef and lamb.
Conjugated linoleic acids (CLA) are polyunsaturated fatty acids. one study in humans detected an inverse (reduced) relationship between milk consumption and breast cancer risk. Many other foods contain CLA, including vegetable oils, eggs, seafood, poultry and pork but at very low levels.

Drinking milk containing conjugated linoleic acid reduced the risk of breast cancer. Although CLA is a polyunsaturate it is different to the PUFAs which are derived from vegetables.

I find it appalling that 'expert nutritionists' are forcing misleading information onto the population, when so much evidence showing the health-giving properties of beef has been steam-rollered into the ground, presumably by the powerful vegetable oils lobby, aided and abetted by the pharmaceutical companies. I have no doubt that is where the blame lies, and if you think I'm exaggerating their power, take a look at Mary Enig's articles, such as this one on coconuts.

I found no research to back up the claims that eating red meat, together with its fat, gives us cancer, high cholesterol, or high blood glucose (diabetes), but plenty to demonstrate that it actually protects us from these diseases.

I shall continue eating beef and beef fat, because I want to stay healthy.

No comments:

Post a Comment

The views and opinions expressed in this blog reflect the author’s point of view.
Material copyrighted by other authors is quoted under a claim of "fair use.".

Created by MyFitnessPal - Calorie Counter

eXTReMe Tracker