Know your labels. According to the FDA, a "fat-free" food must have less than 0.5 grams (g) of fat per serving. "Low-fat" foods have to have 3 grams (g) or less of fat per serving. Reduced fat foods have to have 25% less fat than their regular counterparts, and "light" or "lite" foods may have fewer calories, half the fat, or 50% less sodium.
