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Why Reading Labels Matters
Nutrition labels are the most reliable tool for understanding what you're actually consuming. Marketing claims on the front of packaging ("low fat," "natural," "high protein") are largely unregulated and often misleading. The nutrition facts panel on the back contains standardized, regulated information.
The Serving Size Trap
The most important thing to check first is the serving size. All nutritional values on the label apply to ONE serving — and serving sizes are frequently unrealistically small.
Common serving size tricks:
Cereal: "1 serving = 30g" — most people pour 60–90g
Chips: "1 serving = 28g (about 15 chips)" — most eat 2–3× this
Peanut butter: "1 serving = 2 tbsp (32g)" — easy to use 3–4 tbsp
Always multiply nutrition info by your actual portion
Cereal: "1 serving = 30g" — most people pour 60–90g
Chips: "1 serving = 28g (about 15 chips)" — most eat 2–3× this
Peanut butter: "1 serving = 2 tbsp (32g)" — easy to use 3–4 tbsp
Always multiply nutrition info by your actual portion
What Each Number Means
| Label item | What it means | What to look for |
|---|---|---|
| Calories | Total energy per serving | Match to your calorie target |
| Total fat | All fat types combined | Check saturated vs unsaturated split |
| Saturated fat | Solid fats (animal, palm, coconut) | Limit to under 10% of calories |
| Trans fat | Industrially produced fats | Avoid — 0g is the only acceptable amount |
| Sodium | Salt content | Aim under 2,300mg/day total |
| Total carbohydrates | All carbs including fiber and sugar | Net carbs = total carbs − fiber |
| Dietary fiber | Indigestible carbohydrate | Higher is better — aim for 25–38g/day |
| Added sugars | Sugar added during processing | Limit to under 25g/day (women), 36g (men) |
| Protein | Total protein per serving | Compare to your 1.6–2g/kg target |
Frequently Asked Questions
What does "% Daily Value" mean?Daily Value percentages are based on a 2,000 kcal/day diet. 5% or less is considered low; 20% or more is considered high. These percentages are useful for comparing products but should be adjusted for your actual calorie intake.
How do I identify hidden sugars?Ingredients are listed in descending order by weight. Look for: sucrose, fructose, high-fructose corn syrup, glucose, maltose, dextrose, cane sugar, agave nectar, honey, molasses, fruit juice concentrate. If any appear in the first 3 ingredients, the product is high in added sugar.