Broccoli
Broccoli is one of the low-calorie and most nutritious vegetables among all. Also, broccoli has tone of health benefits including the anti-cancerous affect as well. One cup, almost 91 grams of broccoli offers only 31 kcals and completes over 100% requirement of vitamin C that adults mostly need a day. Broccoli is a member of cruciferous vegetables and you can add it into your salads, gravies, and soups as well to gain benefits of this low-calorie vegetable.