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SANutritionSyllabus dot point

How can food labels be read and interpreted to make informed dietary choices?

Interpret food labels, including the Nutrition Information Panel, ingredient lists, claims and the Health Star Rating, to evaluate food choices

Food labels carry the Nutrition Information Panel, ingredient list, claims and Health Star Rating. Reading them, especially the per 100 grams column, lets you compare products and make informed choices.

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Reviewed by: AI editorial process; not yet individually human-reviewed

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  1. What this dot point is asking
  2. The Nutrition Information Panel
  3. The ingredient list
  4. Claims on packaging
  5. The Health Star Rating
  6. Using labels to evaluate choices

What this dot point is asking

You need to interpret the parts of a food label, especially the Nutrition Information Panel, ingredient list, claims and Health Star Rating, and use them to compare and evaluate foods.

The Nutrition Information Panel

The Nutrition Information Panel (NIP) is the table that must appear on most packaged foods. It lists energy (in kilojoules) and the amounts of protein, fat (total and saturated), carbohydrate, sugars and sodium, and often fibre.

The NIP has two columns: per serve and per 100 grams (or 100 millilitres). The per 100 grams column is the one to use when comparing products, because serving sizes differ between brands and a small serve can hide a high concentration of fat, sugar or salt. The per serve column tells you what you actually get from one portion.

The ingredient list

Ingredients must be listed in descending order by weight, from most to least. So an ingredient near the start makes up a large proportion of the food. If sugar, fat or salt appears high in the list, the food is high in it, even if the front of the pack looks healthy.

Labels must also declare allergens clearly, such as milk, gluten, nuts, soy and egg, which matters for the food intolerance and allergy content. The percentage of key ingredients is often shown too.

Claims on packaging

Nutrition content claims describe a nutrient, such as low fat or high fibre, and must meet legal definitions. Health claims link a food or nutrient to a health effect and are regulated. Front-of-pack words like natural, light or wholesome can be marketing rather than nutrition, so they should be checked against the NIP and ingredient list rather than taken at face value.

The Health Star Rating

The Health Star Rating is a voluntary front-of-pack system that rates packaged foods from half a star to five stars. More stars mean a healthier choice within the same food category. It accounts for energy, saturated fat, sugar and sodium, balanced against positives such as fibre, protein, fruit and vegetable content. It is most useful for comparing similar products, less useful across very different food types.

Using labels to evaluate choices

To evaluate a food: check the per 100 grams figures for energy, saturated fat, sugars and sodium; scan the ingredient list for what is present in large amounts; treat front-of-pack claims with caution; and use the Health Star Rating to compare similar products. This turns a label into evidence rather than marketing.

In short, food labels combine the Nutrition Information Panel, ingredient list, claims and Health Star Rating, and reading them carefully, especially per 100 grams and by ingredient order, lets you evaluate and compare foods objectively.

Exam-style practice questions

Practice questions written in the style of SACE Board exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

2018 SACE Stage 21 marksAn individual bought a pre-packaged, frozen meal of chicken satay with rice. Identify one labelling requirement that the manufacturer of this frozen meal must fulfil.
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One mark for any one mandatory labelling requirement under the Food Standards Code.

Acceptable answers include: a Nutrition Information Panel, an ingredient list (in descending order by weight), the use-by or best-before date, allergen declarations, storage and preparation instructions, the name and address of the manufacturer, or the country of origin.

Any one of these mandatory items earns the mark.

2018 SACE Stage 22 marksThe Health Star Rating is a front-of-pack labelling system that rates the overall nutritional profile of packaged food. Explain one advantage for the manufacturer of having a Health Star Rating on a product.
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For 2 marks, name an advantage to the manufacturer and explain it.

A high Health Star Rating acts as a marketing and selling point. Health-conscious consumers can see at a glance that the product is a healthier choice, which makes them more likely to buy it (1 mark).

This can increase sales and give the manufacturer a competitive advantage over similar products with lower ratings, and it can improve the brand's reputation as one that offers healthier options (1 mark).

2018 SACE Stage 23 marksA nutrition information panel for 250 mL of juice shows 1242.6 kJ of energy and 72.5 g of carbohydrate. Carbohydrates provide 16 kilojoules of energy per gram. Calculate the proportion (%) of the total energy content of one serving that comes from carbohydrates. Show your calculations, and round to the nearest whole number.
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Three marks: energy from carbohydrate, then the proportion, then rounding (1 mark each).

Step 1 - Energy from carbohydrate:
72.5 g x 16 kJ/g = 1160 kJ.

Step 2 - Proportion of total energy:
(1160 / 1242.6) x 100 = 93.35...%.

Step 3 - Round to the nearest whole number:
Proportion = 93%.

This shows almost all the energy in the juice comes from carbohydrate (mostly sugars), which is why reading the panel matters.