You can't net a negative calorie balance by eating "zero-calorie" foods. But don't rule them out, either. Here's why.

Are there foods so low in calories that it takes as many (or more) calories to digest them as they contain? That is the myth behind diets that claim weight loss through "zero-calorie" or "negative-calorie" foods.


 It would certainly make dieting easier if we could munch on calorie-free foods all day. But other than water and diet beverages, there is unfortunately no such thing as a zero-calorie or negative-calorie food, according to Kimberly Lummus, MS, RD, Texas Dietetic Association media representative and public relations coordinator for the Austin Dietetic Association in Austin, Texas.

Busting the "Zero-Calories" Myth