How to read a nutrition label without falling for it

A nutrition label is one of the few consumer-facing documents that's legally required to be roughly honest — and yet supermarkets are full of packaging designed to keep you from reading it carefully. This is a short guide to what actually matters, what to skim, and which claims to treat as marketing.

1. Look at the ingredient list first, not the numbers.

The panel of calories, protein, carbs and fat gets the most attention, but the ingredient list tells you more. Ingredients appear in descending order by weight, so the first three or four items are usually what you're actually buying.

2. Count how many ingredients you'd recognise in a kitchen.

This isn't a moral test — some perfectly fine foods have unfamiliar names (ascorbic acid is vitamin C). But a long list dominated by emulsifiers, stabilisers and industrial oils is a strong hint that you're looking at an ultra-processed product, which matters for the NOVA classification we use in the app.

3. Ignore the front of the pack.

"Natural," "wholesome," "made with real fruit," "high in protein" — these are marketing terms with limited or no regulatory definition in most markets. The nutrition panel and ingredient list are the parts subject to actual rules.

4. Read the serving size, then the servings per package.

The trick that trips people up most: a "single-serve" bag of chips is often two servings on the label. Every number on the panel is per-serving, so a package with "3 servings" quietly triples every calorie and macro figure you read.

5. Where NakedCalorie fits in.

The app does the ingredient-list reading for you. It cross-references against Open Food Facts, USDA data, and additive registries, then surfaces a single score you can read in a couple of seconds — with the underlying reasons a tap away. If you want the methodology, see the What's Inside page.