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Trick 4 / 5

The word that changes the sugar

Seen in an online shop Two oat drinks: 0 g versus 4.4 g of sugar per 100 ml. Both are telling the truth.

“Sem açúcares” (“sugars-free”) is about what’s in it: no more than 0.5 g per 100 g or 100 ml.

“Sem açúcares adicionados” (“with no added sugars”) is about what’s been put in it: no sugar, and no foods used to sweeten it, like honey. But it can still contain the natural sugars of its own ingredients; if it does, the pack has to say “contém açúcares naturalmente presentes” (“contains naturally occurring sugars”).

Other words on the pack, and what they mean

Light
As a rule, at least 30% less energy, or 30% less of a nutrient, than similar products. The pack has to say exactly what’s been reduced.
Zero açúcar (zero sugar)
Up to 0.5 g per 100 g or 100 ml. The legal term is “sem açúcares” (“sugars-free”).
Zero gordura (zero fat)
Up to 0.5 g per 100 g or 100 ml. The legal term is “sem gorduras” (“fat-free”).
Zero calorias (zero calories)
Up to 4 kcal per 100 ml. The legal term is “sem valor energético” (“energy-free”).
Baixo teor de gorduras (low fat), or “magro” (lean)
Up to 3 g of fat per 100 g for solids, and up to 1.5 g per 100 ml for liquids (1.8 g for “leite meio-gordo”, semi-skimmed milk). For some foods, such as milk, “magro” has its own rules.
  • A “light” yoghurt can have less fat and just as much sugar.
  • “Low fat” tells you there’s little fat. It tells you nothing about sugar or salt.
  • “Zero sugar” doesn’t mean there are no sweeteners.

Source: Regulation (EC) No 1924/2006, Annex. This is our summary; the full text is on our sources page (in Portuguese).

If you see “adicionados” (added), go to the nutrition table and check the sugars. The word is on the front; the number is on the back.

This guide teaches you to read and compare labels. It does not say a food is good or bad, and it does not replace advice from a dietitian. The right choice depends on the product as a whole, on how much you eat, how often, and on you.

Technical content review: Sofia Beirão, nutritionist (professional registration 6154N). Guide version 2.2 (Portuguese).

Packs photographed in August 2026; some images from online shops, viewed on 30 September 2026. Brands can change recipes and values: always check the pack in your hand.

The sources, page by page (in Portuguese)

Cover of the guide 5 tricks to choose better, supermarket guide, sugar edition

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