Green Coffee beans are coffee beans of the Coffea that have not been roasted. Roasting of coffee beans reduces the amount of chemical chlorogenic acid. Thus, green coffee beans have a number of chemical chlorogenic acid, which is higher than the coffee beans that have been roasted. Chemical chlorogenic acid in green coffee has many health benefits. For high blood pressure, can affect the blood vessels so that blood pressure is reduced. To reduce weight, chemical chlorogenic acid in green coffee can affect how the body handles blood sugar and metabolism.