Here’s good news for the people who are watching their waistline this holiday season. A cup of raw green beans contains just 31 calories, 3.6 grams of sugar and literally no fat. According to the U.S. Department of Agriculture, there are more than 130 varieties of green bean, all of which are filled with vitamins A, C, and K, folic acid and fibre. Fibre in green bean helps regulate your gut bacteria which promote fat loss by reducing appetite. Apart from weight loss, there are many ways this veggie can promote good health.