It is very simple to explain what the negative calorie diet means. According to this theory, for digesting certain foods, your body burns more calories than the foods themselves actually contain. For example an orange may contain about 50 calories. Let's say for its digestion, your body needs 75 calories. As a result your body will spend 25 calories more from its own energy burning existing fat, allowing you to lose weight.

There are many fruits and vegetables on the list of negative calorie foods. The negative calorie diet claims you can create a deficit of calories in your body jut by eating asparagus, broccoli, onion, garlic, lettuce, spinach, cucumber, apples, oranges, watermelons and more.

I have a feeling that this theory sounds a bit controversional. Let's say a person eats only negative calorie foods. So for every orange this person eats, he or she should burn off 25 calories. Day after day its body will burn an amount of energy from its previous accumulations. This person would soon cease to exist!

Critics of the negative calorie diet claim that there are no foods possessing negative calories and nobody can eat this way to weight loss. On the other hand, I must concede that this theory promotes consumption of foods rich in vitamins and minerals. And this is a great benefit for our body.

Until pro or cons scientific evidences will be provided, let's say that the foods listed above provide energy with relatively little tendency to cause one to become overweight.