How to Read a Nutrition Facts Label
Quick answer
A nutrition label helps compare packaged foods. Begin with serving size, then use calories and nutrient amounts in context. In Canada, the percent Daily Value can help identify whether a serving contains a little or a lot of a nutrient.
- Read serving size before nutrient numbers
- Use percent Daily Value for comparison
- Combine the table with the ingredient list
Step 1: serving size
All numbers apply to the stated amount, which may differ from the amount you eat.
Step 2: nutrients of interest
Compare fibre, sodium, sugars, saturated fat, protein and other nutrients relevant to the choice.
Step 3: ingredients
Ingredients are listed by weight. They reveal the food’s components but do not by themselves determine overall quality.
Two cereals may show similar calories, but one serving may differ in size and one may provide much more fibre and less sugar. Compare equivalent amounts when possible.
Key terms
| Serving size | The quantity used for the label calculation. |
|---|---|
| Daily Value | A reference amount used to interpret nutrient quantities. |
| Ingredient list | Ingredients ordered by weight. |
| Nutrition claim | A regulated statement such as “source of fibre.” |
Common mistakes
- Judging a food by one nutrient while ignoring the whole food and overall eating pattern.
- Turning general public-health guidance into an exact personal prescription.
- Assuming a confident headline is stronger than the evidence behind it.
Practical takeaway
Use this lesson as a framework, not a rulebook. Look at foods in context, favour patterns you can maintain, and seek individual guidance when health conditions, medication, pregnancy, growth or significant dietary restriction change the situation.
Sources and further reading
- U.S. FDA — Nutrition Facts Label
- U.S. FDA — Serving Size on the Nutrition Facts Label
- Health Canada — Healthy eating recommendations
- World Health Organization — Healthy diet
- Health Canada — Nutrition facts tables
Editorial note: NutritionLessons.com summarizes established guidance in plain language. Content is independently prepared from the sources shown and is not individually reviewed by a physician or dietitian. This page provides general education and does not diagnose, treat or replace individualized advice.