Calorie is a unit of energy. The energy can be measured by many methods. The calories in foods depend on their composition and the calorie value of a food is not actually its measured values, but is the average energy of a large number of different samples of the food.

1 calorie = 4.18400 joule = 4.18 kJoloule
1 negative calorie = -4.18400 joule = -4.18 kJoloule

Negative calorie foods are foods, which use more calories to digest than the calories food actually contains! Calories from these foods are much harder for the body to use. In other words, the body has to work hard in order to extract calories from these foods. Even though a food may contain equal amount of calories, much less of these calories can possibly turn into fat in negative calorie foods as fewer calories are actually available to the body. This gives these foods a tremendous natural fat-burning advantage.

suvery says - actually searching before posting actually burns calories too --

http://www.weight-loss.fitness.com/w...-true-not.html

Try it sometime

i am new. i desperately want to lose weight. I trying to reduce my daily calorie intake.
any ideas on negative calorie foods

LINK REMOVED

suggestions welcome

http://www.weight-loss.fitness.com/w...-true-not.html

I'd strongly suggest spending some time reading around the forum - you'l get a lot of info you can use

So I found this list of negative calorie fruits and veggies. Can anyone tell me more about this? Would I include such foods in to my daily calories consumed? I'm pretty confused about it. Thanks!

My mother used to stew rhubarb and then add a package of jello to sweeten and thicken it. Sugar free jello works well and keeps it low cal.

I have heard this before and always assumed that in the case of the veg it was prob true (the maths kinda stacks up) but the cal content of sweet fruits is much higher than that of broccoli or celery....not sure if im gonna start muching on those all the time but i wll def be increasing the intake of broccoli!! I do soooooo love amngo and pineapple tho!

I recently heard about negative-calorie foods. For those who don't know, negative-calorie foods are those that actually cost more calories to chew and digest than they provide in energy. Celery is (allegedly) one such example.

I'm a bit confused as to whether the whole 'negative calorie' thing is true. Which foods, if any, are 'negative calorie'?

Up until now I've been recording my daily caloric intake; studiously weighing each individual ingredient and entering the value on fitday.com. Well, if it's true that certain foods are 'negative calories', why should I bother recording their caloric value?

Many thanks, Colin.

I've always wondered about this too...

Anything that is REALLY low in calories, like has a low calorie density, will probably use more energy to digest than the actual food itself. The only foods I can think of with really low calories is celery and lettuce, maybe cucumber.

I always record it, no matter how small it is

no such thing as negative calorie food, but technically an ice cold glass of water is negative calorie compared to a room temp glass, as your body warms it up to your body temp using energy -hence negative calories, im gonna sell cold water in a can , claim its negative calorie drink and make a fortune

Celery is one of the only "true" negative-calorie foods. This is because celery is primarily water and cellulose -- a form of vegetable fiber that is indigestable by the human body. It has no meaningful sugar, protein or fat.

So yes, when you eat celery, the body expends slightly more energy to digest celery, than the enery that is actually present in the food. In that regard, it can be considered a slightly-negative calorie food.

However, it's important to know that the "negative" calories are marginal, and only add up to a few dozen a day. Yes, you in essence consume zero calories with celery, but you wouldn't be able to live on it, because it's empty from a macro-nutrient standpoint. It can help you cut calories some because it's a good substitute for higher calorie foods, but it's not a silver bullet.

The other foods that are getting listed here as being "negative-calorie" are suspicious. While fruits like apples are high in fiber, they are also high in fructose (fruit sugars.) A medium apple will generally have about 72 calories, with 3.3 grams of fiber and 14 grams of sugar. There is no way your body is burning 72 just to digest an apple.

Same goes for pineapple, papaya, blueberries, strawberries, raspberries, oranges, mangos, etc. I'm really perplexed at where people get their information. The Internet? ;-)

Leafy greens and certain fiberous vegetables like broccoli and cauliflower have marginal calories and could be considered close to "zero" calorie foods, but they aren't negative enough to really add up.

The good news is most of the foods on these lists are very healthy, so eat as much of them as you want -- provided you aren't slathering them in butter and Ranch Dressing.

Hmm....if this was true, and the so-called negative calories would actually have any impact, does that mean if I had a diet that consists only of negative calorie foods, I would end up starving?

If everything I put in my body would consume more energy than it puts in, it should result in me starving to death at some point. Since I don't think that ever happened, and since I am sure there are people out there desperate enough to a) believe in this sort of stuff, and b) try it, I would put the whole negative calorie food into the 'myth' department.

Those foods might be healthy, and low in calories, but I doubt there is such a thing as negative calories. *shrugs*

Would be nice if there was....you could eat and eat, and the more you eat the more you lose......remember what they say about things that sound too good to be true?? *lol*