Dr. Joe Vinson, a chemist from the University of Scranton, believes the ingredient responsible for successful weight loss in his green coffee research is an antioxidant present in the raw coffee beans called chlorogenic acid.
Chlorogenic acid is a natural compound found in the raw green coffee beans but when the coffee beans are roasted, the chlorogenic acid is mostly destroyed. So, any weight loss benefit from drinking regular coffee (i.e. coffee brewed from roasted coffee bean) would be mostly non-existent.
Vinson’s research suggests the weight loss benefit of coffee is derived from the chlorogenic acid in the un-roasted green coffee bean. Raw coffee beans are the most abundant natural plant source of chlorogenic acid.
Green coffee bean extract is generally consumed as a supplement since drinking liquid coffee made from unroasted coffee beans would have a bitter unpleasant taste, and would not provide the desired dosage of chlorogenic acid consistent with the doses administered in Dr. Vinson’s research.
How Chlorogenic Acid Works for Weight Loss
Dr. Vinson suggests that chlorogenic acid inhibits the release of glucose into the blood stream. He hypothesizes that by slowing down the absorption of glucose in the bloodstream, the chlorogenic acid ultimately results in a reduction in the absorption of fat.
Other Potential Health Benefits of Green Coffee Beans and Chlorogenic Acid
Japanese researchers did a study in 2005 using a placebo for some participants and green coffee bean extract on the others, in a test of the potential effects of the substance on people with mild hypertension. The result was lower blood pressure and no negative side effects.
Yet another chlorogenic acid study on rats found that chlorogenic acid reduced cholesterol levels and improved glucose tolerance. Further research to confirm these results is needed.
Recent Chlorogenic Acid Research Discussed By Dr. Vinson
In April 2013, Dr. Vinson gave a presentation at the 245th National Meeting & Exposition of the American Chemical Society (ACS) in New Orleans discussing his most recent research. The ACS is the world’s largest scientific society.
Vinson discussed the potential of natural substances extracted from unroasted coffee beans to help control the elevated blood sugar levels and body weight that underpin type 2 diabetes. His presentation focused on chlorogenic acids. He pointed out that type 2 diabetes, the most common form of diabetes, is an increasing global health problem with almost 26 million in the United States having the disease.
Vinson said, “A simple natural pill or capsule that would both help control blood sugar and foster weight loss at the same time would be a major advance in the treatment of type 2 diabetes,” He added, “Our own research and studies published by other scientists suggest that such a treatment may, indeed, exist. There is significant epidemiological and other evidence that coffee consumption reduces the risk of type 2 diabetes.”
Vinson said “One large study indicated a 50 percent risk reduction for people who drank seven cups of coffee a day compared to those who drank only two cups a day. I am trying to make the coffee and diabetes story as clear as possible for the public. The evidence points to chlorogenic acids as the active ingredients in coffee that both prevent diabetes and improve glucose control in normal, pre-diabetic and diabetic people.”
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References & Resources
PubMed.gov
January 2012
“Randomized, double-blind, placebo-controlled, linear dose, crossover study to evaluate the efficacy and safety of a green coffee bean extract in overweight subjects”
DovePress
January 2012
“Randomized, double-blind, placebo-controlled, linear dose, crossover study to evaluate the efficacy and safety of a green coffee bean extract in overweight subjects”
PubMed.gov
October 2004
“Green coffee bean extract improves human vasoreactivity”
PubMed.gov
September 2005
“Antihypertensive effect of green coffee bean extract on mildly hypertensive subjects”
PubMed.gov
January 2006
“Inhibitory activity of chlorogenic acid on enzymes involved in the fatty acid synthesis in animals and bacteria”
PubMed.gov
January 2002
“Green coffee bean extract and its metabolites have a hypotensive effect in spontaneously hypertensive rats”
PubMed.gov
March 2008
“Consumption of high doses of chlorogenic acid, present in coffee, or of black tea increases plasma total homocysteine concentrations in humans”
PubMed.gov
June 2003
“Chlorogenic acid bioavailability largely depends on its metabolism by the gut microflora in rats”
PubMed.gov
December 2002
“Chlorogenic acid modifies plasma and liver concentrations of: cholesterol, triacylglycerol, and minerals in (fa/fa) Zucker rats”
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Thanks for visiting and for the kind words!
I’ve read in a number of places that the minimum level of chlorogenic acid to look for in a green coffee supplement is 42%. Some supplements don’t say how much they have! Then I saw Dr. Lindsey Duncan the other day on TV on “The View” recommend 45%. But I see your recommended product, Perfect Green Coffee, has 50% chlorogenic acid. Does that mean Perfect Green Coffee is the best one?
We think ‘Perfect Green Coffee’ is as good as a green coffee bean extract product as you can get. Plus, we think it is the very best value, by far. So, when looking at quality, then factoring in price, Perfect Green Coffee is the big winner. That’s why we chose Perfect Green Coffee as our #1 recommended product. Plus, Perfect Green Coffee has a chlorogenic acid level of 50%. That’s as good as it gets. As far as the Lindsey Duncan recommendation for the product with 42%, that’s because he is recommending a product he has an ownership interest in, and that product has only 42% chlorogenic acid. He should have disclosed that fact on television, but did not, and that failure to disclose is a concern. We haven’t looked at his product closely. It’s probably a good product, but we still like Perfect Green Coffee best.
As for products that do not disclose how much chlorogenic acid is in the product, obviously they should be avoided altogether.
Hope this info helps and thanks for visiting! Don’t forget we take telephone orders at 732-249-9008 from 11:00 a.m. to 7:00 p.m. Eastern.
I have been taking the green coffee bean extract (GCBE) since october (not as much as recommended in the first month anyway due to my worry about its effects). since october i have lost 15 pounds (approximately 14 weeks). I found the GCBE provided me great appetite control, it did not take away my hunger, but allowed me to feel satisfied easily so i could easily manage my own portion controls. I also found that I did not get any hunger spikes during the day or evening, probably due to the insulin control it provides which avoids that up and down swings of hunger. I had always eaten decently but this helped my 40-something struggling metabolism greatly, and of course just continue to try to avoid the crappy foods.
That’s great news, Sue.
Please keep us posted on your hopeful continued success!
Finally an article that isn’t filled with garbage – I am a 52 yo male 5 11 and 165 lbs with a slender build (And a gut
) Just started GCBE today at the recommended dosage of 400 mg twice a day – I don’t really need to lose weight, but wonder if GCBE will concentrate on the fat in my stomach or overall weight? I do exerise – mostly walking and have a low calorie intake per day.
Thank you for your cummary of green coffe extract. It was extremely informative for me!
I was wandering if a person is being doing UA”S wll it show up as a bad UA? or is it alright to take when you are under pain mng.
I just started the GCBM, the dosage instructions only mentions taking 2 pills 30 minutes before meal time, which for me is 2 prior to breakfast and 2 prior to lunch, 4 pills.
Is that too many pills to take in a day for a 50 yo woman at 5″5″ and 158 lbs?
I have read other sites that only mention taking 1 pill prior to breakfast and lunch. Which is correct?
thanks
Hi Tina,
Which brand are you taking? You mentioned GCBM, but I’m not familiar with that (if it is a brand) so it would be inappropriate to comment since different brands have differing levels of potency. However, regarding the green coffee brand we like best, Perfect Green Coffee, the proper dosage is discussed here on HealthFoodPost.com. Just click here http://healthfoodpost.com/green-coffee-extract/green-coffee-bean-dosage/
Thanks for stopping by!