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Green Coffee Extract chlorogenic acid for Weight Loss

 The weight loss properties of green coffee are attributed to a type of antioxidant found in coffee known as , or CGA. CGA has been purported by researchers to inhibit the absorption of glucose in the small intestine as well as the release of glucose from the liver into the circulation. This effect reduces the level of glucose in your bloodstream so that your body relies on fat cells for energy instead of carbohydrates, subsequently leading to a loss of body fat.


Chlorogenic Acid Content in Coffee

CGA is present in high quantities in green coffee and to a lesser degree in roasted coffee, as it is broken down by the roasting process. A report by the University of California revealed that green coffee beans deliver anywhere from 34.43 to 41.64 mg per gram, mg/g, of CGA. Roasting green coffee beans at 230 degrees Celsius for 12 minutes reduces the CGA content to almost half, and roasting at 250 degrees Celsius for 21 minutes almost totally depletes CGA levels. The CGA content for most roasted coffee ranges from about 2.05 to 7.07 mg/g.


Studies on Green Coffee

Several studies have confirmed the weight loss powers of green coffee, including a 2007 study published in "The Journal of International Medical Research." The study focused on a coffee product comprised of 2,000 mg of Arabica and Robusta instant roasted coffee, 200 mg of a green coffee extract and 90 mg to 100 mg of CGA. Participants in the green coffee cohort drank five cups of the coffee product, equivalent to 11 g of coffee a day for 12 weeks. At the end of the 12 weeks, the green coffee cohort lost an average of 5.4 pounds and 3.6 percent body fat. In comparison, the black coffee group lost a total of 1.7 pounds and 0.7 percent body fat. A similar independent study conducted in 2009 confirmed these findings, with an average weight loss of 1.35 pounds in four weeks. Participants in the study consumed a coffee product containing 2,820 mg of instant roasted coffee, 180 mg green coffee extract and 81 mg of CGA once a day.



These studies used a mixed coffee product containing both green coffee extract and roasted coffee. Since green coffee cannot be brewed like roasted coffee, it can only be consumed in the form of green coffee extract. Several companies now offer blends of roasted coffee with green coffee extract that are promoted specifically for weight loss. The extract may also be purchased as a separate supplement without coffee. As of 2011, no recommendation has been set for a safe dosage of green coffee extract. Studies on weight loss have demonstrated a positive effect at dosages anywhere from 180 mg to 1,000 mg of green coffee extract and 81 to 500 mg of CGA. As with any type of weight loss supplement, always talk to your physician first before using green coffee extract to determine if it is safe for you.


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