Green coffee beans are beans that have not been roasted. The roasting process reduces amounts of the active chemical, chlorogenic acid. Therefore, green coffee extract (from unroasted beans that have been soaked and then concentrated) have a higher level of this acid compared to regular, roasted coffee beans.
Chlorogenic acid in green coffee beans has been shown in studies to have potential health benefits for the heart, diabetes and weight loss. For high blood pressure, it can affect blood vessels so that pressure is reduced. For weight loss, chlorogenic acid is thought to affect how the body handles blood sugar and metabolism.
A study in India found that people taking pills with green coffee bean extract lost an average of 18 pounds - 10% of their body weight - over a period of 22 weeks. The study, published in the journal Diabetes, Metabolic Syndrome and Obesity, tested two doses of extract - 700 and 1,050mg per day.
CARBdefender contains the equivalent of 1,500mg of green coffee powder, along with the other specialist ingredients.