For the past several years one subject has been coming up quite often and has really started to be quite a hot topic. The subject is a fat known as CLA which stands for Conjugated Linoleic Acid. According to the rumors this stuff will cure cancer, lower your cholesterol and decrease your body fat especially around the middle all at one time. Kind of like the superman of fats.
It was about 1990 when I first heard about the benefits of CLA, but there were much more pressing matters at the time. Several years later I read some short articles in a couple of Natural Health Journals. It seems that CLA was being tested in the treatment of certain cancers and that the side effect was a loss of weight. The studies then were far too small to be considered acceptable proof of much of anything other than the stuff warranted further study. At that time most people were wondering what would happen to ephedra, so little attention was paid to CLA.
What is CLA?
CLA, Conjugated Linoleic Acid is actually a mixture of positional or geometric isomers of the omega-6 polyunsaturated fatty acid linoleic acid. Apparently there are a number of different isomers and most studies have used mixed isomers. The fact that these studies used mixed isomers may have contributed to the differences in results of the various studies. Certain isomers seem to be more active than others.
Some problems in verifying the research may also lie in the possibility that different isomers of CLA have different physiological effects on the body and may react differently in obese as opposed to "normal" weight individuals.
CLA has been said to be useful in weight loss, cardiovascular disease prevention, diabetes, and cancer treatment. For our purposes here we will only discuss whether or not it works for weight loss and especially fat loss.
Does it work?
It would appear that there is some validity to the claims that CLA reduces body fat and that CLA can be a good supplement to assist in fat loss for the overweight and obese person. More and more studies have been done and are being done and it would seem that CLA comes out on top each time. In fact I haven't yet seen a study which disputes the claim of earlier researchers that CLA reduces bodyfat. It also would appear from many studies that it appears to help most with abdominal bodyfat.
I have seen such noted names as Josh Bezoni, and Dr. Williams write articles in favor of CLA, and I have to agree with their opinion at this point.
The most common method of obtaining CLA is by purchasing it as a supplement, however blue, brie, Edam, and Swiss Cheeses are also good sources of CLA. I read that beef from Australia contain a higher level of CLA since these cattle graze on open range. If this is true then it may follow that the beef from Arizona and New Mexico would also have higher levels since there is more open range in that area of the US. I have not seen any data that would indicate that.
CLA can be purchased at most health food stores and on line at VitaCost and other online stores. Be sure to get the highest quality from a company you know and trust.
Below are the results of some studies I found in the Micromedix files at the hospital where I work.
A. IMPORTANT NOTE
1. The dosing of dietary supplements is highly dependent on a variety of factors such as quality of raw materials, manufacturing process and packaging. Since no official standards have been established to date to regulate the production of dietary supplements in the United States, dosage ranges must be employed as guidelines only.
B. ORAL Dose
1. WEIGHT LOSS: 1.4 grams to 6.8 grams daily. The average dose is 4.2 grams daily (Mougios et al, 2001; Riserus et al, 2001; Smedman & Vessby, 2001; Blankson et al, 2000).
a. Conjugated linoleic acid (CLA) 0.7 grams daily for four weeks followed by 1.4 grams daily for four weeks reduced body fat percentages by 5% to 6% in 22 adult volunteers during the higher dose supplementation period. A significant decrease in the sum of thickness of ten skinfold measurements and percentage body fat and fat mass was observed during the period of 1.4 grams CLA daily as compared to placebo (p less than 0.001). None of these parameters changed significantly during the entire study period, nor were any significant differences in any anthropometric parameters found between the treatment and control groups. A significant decrease in HDL-cholesterol (p = 0.0056), as well as a trend toward lower triacylglycerols and total cholesterol, was observed during the low CLA period (Mougios et al, 2001).
b. Conjugated linoleic acid (CLA) significantly reduced sagittal abdominal diameter (SAD) as compared with placebo in a double- blind, randomized, placebo-controlled study of 24 abdominally obese men. Subjects received 4.2 grams CLA daily or placebo (olive oil). After four weeks of supplementation, a significant reduction in abdominal adipose tissue was seen in the subjects treated with CLA (p = 0.041). Other measurements of anthropometry or metabolism showed no significant differences between the two groups (Riserus et al, 2001).
c. Conjugated linoleic acid (CLA) decreased body fat by 3.8% in a randomized, double-blind, placebo-controlled study. Body weight, body mass index (BMI), and sagittal abdominal diameter were unchanged. Fifty-three nonobese, normolipidemic subjects received CLA 4.2 grams daily or placebo (olive oil) for 12 weeks. No differences were noted in serum lipoproteins, nonesterified fatty acids, or plasminogen activator inhibitor 1 (PAI-1). A trend toward increased glucose levels was seen in the CLA-treated group as compared to the control group. The diverging results of this study, as compared to others, could be due to the use of different isomers or differing effects of CLA on obese as compared to normal weight individuals (Smedman & Vessby, 2001).
d. Conjugated linoleic acid (CLA) significantly reduced body fat mass in a twelve week, randomized, double-blind, placebo- controlled study of 60 overweight or moderately obese individuals. Subjects received placebo (9 grams olive oil daily) or CLA 1.7, 3.4, 5.1 or 6.8 grams daily in addition to olive oil to bring the total fatty acid intake to 9 grams daily. After twelve weeks of treatment, no group showed a significant reduction in weight or body mass index (BMI). However, a significant reduction in body fat mass (BFM) was seen with CLA 3.4 grams (p = 0.05) and 6.8 grams daily (p = 0.02). A trend in all CLA groups was seen toward increased lean body mass (LBM) but this was only significant with CLA 6.8 grams daily (p less than or equal to 0.05). Since subjects were exposed to either light or intensive exercise training during the course of the study, the authors point out that it is difficult to distinguish if the increase in LBM was due to CLA or training activities (Blankson et al, 2000). References:
Basu S, Riserus U, Turpeinen A et al: Conjugated linoleic acid induces lipid peroxidation in men with abdominal obesity. Clin Sci (Lond) 2000; 99(6):511-516
Blankson H, Stakkestad J, Fagertum H et al: Conjugated linoleic acid reduces body fat mass in overweight and obese humans. J Nutr 2000; 130(12):2943-2948
Mougios V, Matsakas A, Petridou A et al: Effect of supplementation with conjugated linoleic acid on human serum lipids and body fat. J Nutr Bio 2001; 12:585-594.
Smedman A & Vessby B: Conjugated linoleic acid supplementation in humans-metabolic effects. Lipids 2001; 36(8):773-780
Conclusion:
CLA appears to be an effective supplement to assist in the loss of bodyfat. It could be a good addition though not a substitute for a quality nutrition and exercise program.
Disclaimer:
This report should in no way be considered medical advice. The suggestions and/or techniques described in this report are for informational purposes only. If you are ill or injured you should see your primary healthcare professional immediately.
About the author:
Jerry Goodwin has been certified as a Medical Technologist since 1977. He is also certified as a Personal Trainer, Cardiovascular Trainer and Medical exer-therapist. He is a Veteran of the US Navy having served during the Viet Nam era. Jerry also served in the Army National Guard in Ohio, Texas, Kansas and Georgia as a field medic with Infantry, Armored Cavalry, Artillery and Mechanized Infantry Units. He has earned several medals including the Army Commendation Medal. Jerry is the editor of Body Mind and Goals Ezine and the owner of BMG Services Fitness and Nutrition at http://www.bmgfitness.com
cheapest limo Akin .. Lockport Chicago limo O’HareIf I were asked, "what is the most difficult thing... Read More
How did a thin person like me become overweight? My... Read More
The main reasons most people have difficulty maintaining their ideal... Read More
New studies suggested once again that citric fruits including oranges,... Read More
Did you know that how and when you eat is... Read More
Over two thirds of Americans are over weight, and half... Read More
Lose a pound of fat? what does it take? Not... Read More
"Unless that apple tastes like the best apple you've ever... Read More
Dieting Dilemma No 1: When Life Gets in the WayThat... Read More
Flip through a magazine, scan a newspaper, or channel surf... Read More
How to Break Your PlateauToday is a typical morning like... Read More
I'm sure you already know that weight loss and improved... Read More
Several months ago I was in desperate need of weight... Read More
The rediscovery of the wealth of the wonder drug Hoodia... Read More
When people hear the term Unified Theory, some times called... Read More
If you have been trying to lose weight permanently, then... Read More
The act of taking the first step is what separates... Read More
These treadmill weight loss tips are a great way to... Read More
Food cravings are crafty -- they appear from nowhere and... Read More
To lose weight and get in shape you must have... Read More
Today's society is about speed. We no longer have to... Read More
The Order of Energy UtilizationBack to our table of stored... Read More
My responsibility as a high profile fitness expert lies not... Read More
It happens every morning when you mosey out of bed,... Read More
Fat has had a lot of bad press and for... Read More
Aledo wedding limo ..The underlying principles of low carb diets are based on... Read More
I am so grateful that you're taking steps to take... Read More
If you are like everyone else who has hit rock... Read More
The Atkins low-carb diet consists of four phases: Induction, Ongoing... Read More
There's nothing more fun then being creative with food and... Read More
My responsibility as a high profile fitness expert lies not... Read More
Are you trying to lose weight?If you are, STOP!Funny thing... Read More
More than any other time in history, people are all... Read More
The following are weight loss tips that you can start... Read More
In our quest to get that "perfect" body, we actually... Read More
New Years Resolutions do not work because you are really... Read More
According to the American Obesity Association, an astounding 64.5 percent... Read More
Several months ago I was in desperate need of weight... Read More
Low carb diets can be classified as food plans that... Read More
If you are looking for a way to lose fifty... Read More
Fats are always looked at as a negative in a... Read More
I wonder how much it is generally known that the... Read More
The percentage of Americans who are overweight and obese is... Read More
First of all we need to find out a reason... Read More
Nice girls don't speak up. Nice girls take care of... Read More
It is well known that about two-thirds of the U.S.... Read More
Now that the holiday season is here, holiday foods and... Read More
Got milk? New research suggests you should if you want... Read More
Weight Loss Red Flag GuideDespite claims to the contrary, there... Read More
What is the relationship between intake of nutrition and metabolism... Read More
Weight Loss |