How to Read Nutrition Labels Like a Dietitian — Complete Guide
Step 1: Check Serving Size First
The serving size listed on the label is often much smaller than what people actually eat. A bag ‘containing 2.5 servings’ is almost always eaten as one. All values on the label (calories, fat, sodium) apply to the serving size listed — multiply by actual servings consumed. This single step changes how most people read labels.
What to Look at for Different Goals
Weight loss: total calories, protein (higher = better satiety), fiber (higher = better satiety), added sugars (lower = better). Heart health: saturated fat, trans fat (zero is the only acceptable level), sodium, dietary fiber. Muscle gain: protein content, calorie density. Nutrient sufficiency: micronutrient %DV values (≥20% DV = excellent source).
Percent Daily Value (%DV) Explained
%DV is calculated based on a 2000-calorie diet. 5% or less = low. 20% or more = high. For nutrients you want to limit (sodium, saturated fat, added sugars), look for low %DV. For nutrients you want more of (fiber, calcium, vitamin D, iron), look for high %DV.
The Ingredient List: What to Know
Ingredients are listed in descending order by weight. If sugar appears in the top 3 ingredients, the product is high-sugar regardless of what the front label says. Multiple names for sugar (dextrose, maltose, corn syrup, fructose, sucrose) split the amount — check the total ‘added sugars’ line for the actual picture.
Frequently Asked Questions
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