What does a claim of fat free food label promise?

A claim of "fat-free" on a food label promises that the product contains less than 0.5 grams of fat per serving. This label indicates that the food is likely lower in calories and may appeal to those seeking to reduce their fat intake. However, it's important to note that fat-free foods can still be high in sugar or other additives, so consumers should check the overall nutritional content.