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Five Key Pieces of Information to Check on the Product Label

Katarzyna Mazur
Katarzyna Mazur ✓
Diets Premium Expert • 23.10.2026
✓
Scientifically reviewed by a clinical dietitian: This article has been peer-reviewed for adherence to IŻŻ, WHO, and PTGiP clinical nutritional standards.
Diets Premium Expert Katarzyna Mazur min read 2 min Scientifically reviewed by a clinical dietitian 23.10.2026
Five Key Pieces of Information to Check on the Product Label

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Key Takeaways
Informed interpretation of nutritional food packaging labels is an indispensable skill for consumers committed to preventive health and wellness. Misleading front-of-package marketing slogans such as 'fit', 'natural', or 'no added sugar' often obscure undesirable additives and empty calories. This comprehensive guide details the 5 foundational elements of product labels that every conscious shopper must inspect before purchasing.
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Descending Ingredient List – Identifying the True Product Matrix

Under food regulatory standards, ingredient statements must list components in descending order of predominance by weight at the time of formulation. Consequently, the first three listed ingredients constitute the bulk of the food matrix. If a product marketed as 'fruit-rich' lists refined sucrose or high-fructose corn syrup first, with actual fruit puree relegated to minor percentages, it represents ultra-processed food masquerading as health food.

Nutrition Facts Table: Simple Sugars, Sodium, and Saturated Fats

The standardized nutrition facts panel quantifies caloric density and macronutrients per 100 grams and per standardized serving. Scrutinize the 'of which sugars' subline: items exceeding 10–12 g of sugars per 100 g constitute high-sugar foods that drive insulin spikes. Equally vital is monitoring sodium concentrations (values exceeding 1.2 g of salt per 100 g indicate high salt content) and saturated lipid percentages.

Date Labeling: 'Use By' versus 'Best Before' Distinctions

Understanding regulatory date terminology is essential for microbiological safety and curbing food waste. 'Use by' signifies an absolute safety deadline applicable to perishable matrices (fresh poultry, raw seafood, unpasteurized dairy); consuming items beyond this date poses real risks of bacterial food poisoning. In contrast, 'best before' indicates quality duration (flavor, crispness, aroma) for stable goods (grains, canned legumes); food remains safe beyond this date if packaging is intact.

Mandatory Allergen Declarations and Cross-Contamination Warnings

European food standards mandate prominent typographical highlighting (bolding, contrasting colors, or capitalization) of the 14 major recognized food allergens: gluten, crustaceans, eggs, fish, peanuts, soybeans, dairy, tree nuts, celery, mustard, sesame, sulfites, lupin, and mollusks. Individuals managing celiac disease or anaphylactic IgE-mediated allergies must inspect these declarations alongside precautionary 'may contain traces' advisories.

Food Additives (E-Numbers) – Distinguishing Safe Substances from Fillers

The E-number coding system merely denotes harmonized European food additive authorization; not all represent synthetic contaminants. For example, E300 is ascorbic acid (vitamin C), E100 is natural curcumin, and E322 is lecithin. However, excessive reliance on flavor enhancers (monosodium glutamate E621), azo dyes (tartrazine E102), and inorganic phosphates (E338–E341) typically signals poor raw ingredient quality and ultra-processing.

Katarzyna Mazur

Katarzyna Mazur

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Diets Premium Expert

Diets Premium team expert. Specializes in nutrition plans, strength sports, and training plans.

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