Start With the Serving Size — Not the Calorie Count
Every number on a nutrition label is based on the listed serving size, not the entire package. A snack bag might list a serving size as "half the bag" — meaning the calories and other numbers effectively double if you eat the whole thing. Always check serving size first before interpreting anything else on the label.
Understanding % Daily Value (%DV)
The %DV shows how much a nutrient in one serving contributes to a total daily diet, based on a standard 2,000-calorie reference diet. As a rule of thumb:
- 5% DV or less is considered low for that nutrient
- 20% DV or more is considered high
Use this to quickly gauge whether a food is a significant source of something you want more of (like fiber) or less of (like sodium), even without doing manual math.
Added Sugars vs. Total Sugars
Since updated labeling requirements, "Added Sugars" is now broken out separately from "Total Sugars." This distinction matters because naturally occurring sugars (like those in plain milk or whole fruit) are generally considered less concerning than sugars added during processing — checking "Added Sugars" specifically gives a clearer picture of processed sugar content than total sugars alone.
Sodium: Easy to Underestimate
Sodium adds up quickly across processed and restaurant foods, often without tasting overtly salty. Checking the %DV for sodium across a day's meals — rather than judging by taste — is a more reliable way to monitor intake if you're watching sodium for health reasons.
Fiber: An Underrated Number
Dietary fiber supports digestive health, satiety, and healthy blood sugar response, but it's easy to overlook on a label. Checking fiber content, especially in packaged carbohydrate-based foods (bread, cereal, crackers), can help distinguish more nutritionally supportive options from heavily refined alternatives with similar calorie counts.
The Ingredients List Tells a Different Story
Ingredients are listed by weight, from most to least. A quick scan of the first few ingredients often reveals more about a food's actual composition than the nutrition facts panel alone — if sugar, corn syrup, or refined flour appear in the first few ingredients, that's informative regardless of how the calorie or macro numbers look.