There are various reasons that lead an individual towards gaining weight and obesity is a necessary evil which can affect the individual's health considerably. While there can be multifarious causes for obesity, one of the most prevalent causes is definitely the consumption of junk food. Junk foods are abundant in high calorie ingredients and with the emergence of scores of fast food chains worldwide, consumption of junk food have increased manifold times. It is more alarming to note that a growing number of young children institute the maximum junk food eaters which has also increased child obesity veryly. Therefore, what is necessary is that junk food consumption needs to be reduced or even abandoned completely if possible in order to ensure weight loss. Also, it is important in these cases to replace the junk food in the diet with certain negative calorie foods which refer to food stuff which aids in weight loss. The most important characteristic of these negative calorie foods are the fact that they are made up of less calorie constituents than is actually required for digesting them. The negative calorie foods are extremely beneficial and their most important function is fat burning. This happens by means of the following process. The negative calorie foods contain calories which can not be used by the body readily and therefore, much more effort needs to be put in by the body organs to extract the calorie from these foods. Moreover, since there are very insignificant proportions of calorie available to the body, there is also a very scant possibility of these calories transforming into fats. Therefore they act as natural fat burning foods facilitating weight loss. Therefore here weight loss occurs by burning the calorie content in food.
There are several food items which are extremely beneficial for weight loss and are significantly important as negative calorie food as well. These include fruits like turnip, watermelon, mango, apple, cranberry, blueberry, strawberry, logo etc. and vegetables like cucumber, carrot, cauliflower, cabbage, onion, radish, lettuce, asparagus, papaya, beets, hot chili, zucchini, spinach etc. These are some of the food ingredients which should combine the daily diet of an obese individual rep0lacing the junk food contents to ensure effective weight loss. There are also certain researchers who believe that while nothing like 'negative calorie' food actually exist, these ingredients can aid weight loss by increasing metabolic rates. However, the whole theory about negative calorie food remains gripped in controversies and are not acceptable to a lot of scholars due to lack of scientific evidence.