Traffic Light Labels vs. GDA: Which Nutritional Labeling System is Most Effective?

If you’ve ever stared at a sandwich pack in a London grocery store, you’ve seen the bright Red, Amber, and Green circles. This is the "Traffic Light" system. But turn that same pack around, and you might see a series of percentages based on a "2,000-calorie diet." This is the GDA (Guideline Daily Amounts). For the average consumer, having two different systems on one package can be overwhelming. Which one should you trust? At CalorieFinder , we integrate both sets of data into our global search results at www.caloriefinder.org . Today, we are breaking down the pros and cons of each to help you shop with clarity. 1. The GDA System: The Mathematical Approach The Guideline Daily Amounts (GDA) system was the first major attempt to standardize nutrition labeling. It shows you exactly what percentage of your daily limit a single serving provides for calories, fat, saturated fat, sugar, and salt. The Pros: It is highly precise. If you are a "numbers person," knowing t…