Research suggests that green coffee bean extract helps people lose weight if taken daily, according to WebMD. However, the research study conducted was small, and further study is needed to verify these claims.
Green coffee bean extract is taken from beans that are not roasted, according to WebMD. These unroasted beans contain a high amount of chlorogenic acid. It is thought that chlorogenic acid affects the metabolism and blood sugar of the body in a way that promotes weight loss. The small group of people within the study showed an average weight loss of 17 pounds with no changes in diet. They also lost more weight over the placebo and showed higher weight loss when the dose was increased.