Dear lybrateuser,
-Green coffee beans have a higher level of chologenic acid compared to regular roasted coffee beans & this helps to burn fat fast & thereby help in weight loss, it might also help in reducing blood pressure by an effect on the blood vessels
-it is also beneficial in diabetes ,Alzheimers disease & bacterial infection
-it can cause caffeine related side effects if taken in excess, can cause insomnia, nervousness& restlessness ,nausea & vomiting, increased heartrate, headache & anxiety.