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