Beans - Green beans include a reduced risk of heart disease and colon cancer, as well as improved regulation of diabetes. Green beans provide a big boost to your immune system. These nutrient packed beans also benefit in eyes and bones, while regulating the digestive processes. Green beans are very adaptable vegetable that can be grown in many different climates. Green beans fall in two categories: pole beans and bush beans. These delicious and crunchy beans are low in calories and fat and contain no cholesterol. The fiber content of green beans is very high.