Green unroasted 
coffee beans may have multiple benefits for people with or at risk of 
type 2 diabetes, according to new research which shows that an extract from these beans can help lower 
blood glucose levels, as well as 
reduce weight.
Joe Vinson, of the University of Scranton in Pennsylvania, and colleagues previously observed that participants who consumed this green 
coffee extract over a period of 22 weeks lost about 10% of their 
body weight . 
Building on their findings, they began to investigate whether the extract, which contains a high concentration of chlorogenic acids, had an effect on 
blood glucose.
Male and female participants of normal weight and without 
diabetes were given between 100 mg and 400 mg of the extract in a capsule with water each day, and then underwent 
glucose tolerance tests.
At the end of the study, the tests showed that the green coffee extract was successful in lowering the level of 
blood sugar in each participant. 
Those who took the largest 400 mg dose experienced the biggest drop in 
blood glucose, though all doses produced a significant reduction, Vinson explained
In a statement, he said: "A simple natural pill or capsule that would both help control 
blood sugar and foster 
weight loss at the same time would be a major advance in the 
treatment of 
type 2 diabetes.
"Our own research and studies published by other scientists suggest that such a treatment may, indeed, exist."
The findings were presented this week at the American Chemical Society's Spring 2013 National Meeting and Exposition in New Orleans.
http://www.diabetes.co.uk/news/2013/Apr/green-coffee-bean-extract-has-anti-diabetic-benefits-91144231.html