New research has demonstrated that unroasted coffee beans, or “green coffee bean extract” may help with weight loss possibly because of its effect on glucose and fat metabolism. In a small clinical trial, 16 overweight individuals taking different doses of green coffee bean extract lost an average of 17.5 pounds and 16% in body fat, in 22 weeks.
Green coffee beans are coffee beans, which have not been roasted. And green coffee bean extract is an extract from the unroasted green coffee bean.
In March of 2012, Dr. Joe Vinson performed a clinical study with this substance and found a significant connection between consumption of green coffee and fat loss. Vinson speculates that this may be due to chlorogenic acid, which Vinson believes reduces the absorption of glucose and lowers the hyperglycemic peak. Vinson is a chemist at the University of Scranton in Scranton, PA. He says his successful trial results should pave the way for more research on this substance. So, a larger trial is being planned. Dr. Vinson adds that green coffee bean extract may also reduce insulin levels, which would improve metabolism function. He also said there were no indications of negative side effects reported by any of the clinical study participants.
If green coffee is ground and roasted like regular coffee, it has very little taste. In fact, coffee brewed with green coffee beans would be extremely bitter. So, folks who wish to try this substance for weight loss would probably prefer taking a green coffee bean extract supplement rather than drinking something with no taste or a bitter unpleasant taste. The coffee that most of us love to drink, by the way, derives its’ flavor from the roasting process.
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Answers to Some Commonly Asked Questions
What sparked the initial popular interest in green coffee bean extract?
Studies have been going on for a number of years, but the publicity surrounding the recent study headed by Dr. Joe Vinson from the University of Scranton got the ball rolling.
What caused interest in green coffee bean extract to skyrocket?
Green Coffee Bean Extract was highlighted on the popular Dr. Oz TV show as an effective weight loss supplement and then interest in green coffee beans soared.
What is chlorogenic acid?
Chlorogenic acid is the substance in the green coffee bean extract that is believed to be responsible for weight loss.
How does green coffee bean extract and chlorogenic acid burn fat?
Chlorogenic acid is believed to inhibit the release of glucose into the blood stream. When glucose enters the bloodstream after eating, the liver produces insulin in response to the production of glucose. The insulin, in turn, causes the body to store the energy from the glucose as fat. But the chlorogenic acid is believed to slow down the glucose entering the bloodstream, thus reducing the absorption of fat, resulting in weight loss. It is believed the chlorogenic acid may also cause the liver to metabolize the fat faster.
Are there other possible health benefits from green coffee extracts?
What is meant by “pure” green coffee bean extract?
Pure means no additives whatsoever. None! In other words the product should have no fillers and nothing at all added. But consumers need to read labels to verify that the product contains no fillers or other unnecessary ingredients or preservatives. Many products labeled pure are not really pure. So, be sure and read the labels and if there is something on the label you do not understand, call or email the company. And if there is no products ingredients label on the company website, avoid the product.
What is important to look for in a green coffee supplement?
It is important that the supplement contains chlorogenic acid and that the chlorogenic acid content is at least 42% to 50%, according to nutritional supplement companies and at least one prominent celebrity TV doctor. The supplement company should have had ingredient samples tested by a certified testing lab to verify the chlorogenic acid level so consumers can be assured they are buying a product containing ingredients which are consistent with the ingredients used in the recent green coffee bean extract weight loss study.
What Is GCA and GCA®?
This is an abbreviation for Green Coffee Antioxidant. It’s also a brand of green coffee extract containing 42% chlorogenic acid.
What is Svetol®?
This is a brand of green coffee bean extract containing 45% chlorogenic acid.
Is it important that green coffee supplements contain GCA or Svetol?
No. GCA and Svetol are brand names. They are promoted as good brand names but brand names are not important. Claims that green coffee bean extract supplements must contain the brand names GCA or Svetol in order to be effective are not correct. The chlorogenic acid level and the purity of the product are important, not the brand names. By steering clear of the hype surrounding brand names, consumers can save money with a quality product such as Perfect Green Coffee.
What Is GCBA?
This is an abbreviation for Green Coffee Bean Antioxidant.
What is GCBE?
This is an abbreviation for Green Coffee Bean Extract.
How to select a supplement for the best opportunity to replicate the weight loss results in the clinical study?
First, the supplement should be 100% pure. Pure means (1) zero fillers, (2) zero binders, and (3) zero artificial ingredients.
What about dosage?
Although the Vinson study had a low dose group of participants and a higher dose group, most nutritional supplement companies are currently suggesting from 1200 mg to 1600 mg per day. Dr. Oz originally recommended 800 mg 2 times per day (or 1600 mg per day) and in a later TV show, in September 2012, recommended 1 tablet of 400 mg taken 3 times per day 30 minutes prior to each meal (or 1200 mg per day.) This is consistent with what most nutritional supplement companies are currently recommending, as of March of 2013.
What about the recommended level of chlorogenic acid?
The conventional wisdom among nutritional supplement companies is that an effective product should contain at least 42% chlorogenic acid. On his TV show Dr. Oz recommended to look for at least 45% chlorogenic acid. The ‘Perfect’ brand offered on the site has 50% chlorogenic acid and that level is lab-verified. The chlorogenic acid level should be stated on the product label. Also, some evidence should be displayed on any website offering these products showing that the stated level has been verified by a reputable independent testing lab.
What else to look for on a product ingredients label?
The product label should state the chlorogenic acid level (see above) since chlorogenic acid is the antioxidant present in raw coffee beans believed to be responsible for weight loss. And, as mentioned earlier, there should be (1) no fillers, (2) no binders, and (3) no artificial ingredients. So, read the ingredients labels carefully. Ingredients labels should be displayed on all websites offering nutritional supplements.
What else to look for when evaluating a product?
Make sure you know that the product was manufactured in a country with proper quality controls.
Does it matter if the product is made from Arabica or Robusta coffee beans?
No, absolutely not. We have much more information about this elsewhere on this website.
Research & Resources Reference
March 28, 2012
“Green Coffee Beans May Aid Weight Loss”
March 28, 2012
“Green coffee beans may lead to weight loss, study shows”
March 27, 2012
“Coffee Bean Extract Linked to Weight Loss”
March 27, 2012
“New Evidence On Effects of Green Coffee Beans in Weight Loss”
March 28, 2012
“Two cups of coffee per day may decrease odds of developing heart failure”
December 12, 2012
“Heavy coffee drinkers shown to have lower oral cancer risk”