What food uses more calories to eat than it contains?

These types of foods are known as Negative Calorie foods. The idea of Negative Calorie foods is still heavily debated among nutritionists and weightloss experts. The following is a brief list of foods "believed" to be Negative Calorie foods:

· Broccoli
· Cabbage
· Lettuce
· Carrots
· Cauliflower
· Celery
· Spinach
· Tomato
· Cucumber