Walk into any supermarket and you’ll find products promising to be high protein, low fat, no added sugar, natural, or healthy. But how much can you really tell about a food from the front of the package?
The answer is: not much.
If you want to make better decisions about what you eat, one of the most useful skills you can develop is nutrition label literacy—the ability to understand and interpret the information on food packaging.
You don’t need to become a nutrition expert or memorise every number on a nutrition label. Learning how to quickly identify serving size, calories, protein, carbohydrates, fat, fibre, sugar and sodium can help you compare products, manage your diet and avoid being misled by clever marketing.
Here’s how to become a more confident label reader.
Why Nutrition Label Literacy Matters
Food labels give you information that isn’t always obvious from the packaging.
Two products may look similar, but one could contain considerably more sugar, sodium or saturated fat. Similarly, a product marketed as “high protein” may contain only a modest amount of protein per serving.
Being able to read labels allows you to make decisions based on what is actually inside the package, rather than relying solely on advertising or health claims.
This can be particularly useful if you’re trying to:
- Manage your weight
- Build or maintain muscle
- Improve your diet quality
- Control your sugar or sodium intake
- Increase your fibre intake
- Support your running or training
- Make healthier everyday choices
The goal isn’t to make every food decision perfect. It’s to understand what you’re eating well enough to make choices that fit your personal needs.
Step 1: Check the Serving Size First
This is arguably the most important part of the label.
Before looking at calories or nutrients, check how much the manufacturer considers one serving.
A packet might contain 400 calories—but if the label says there are two servings per packet, eating the entire packet means consuming 800 calories.
The same applies to sugar, fat, sodium and other nutrients.
Ask yourself:
“How much am I actually going to eat?”
If you eat two servings, you’ll need to multiply the listed nutrients by two.
This simple habit can prevent one of the most common mistakes people make when reading food labels.
Step 2: Look at Calories in Context
Calories tell you how much energy a food provides, but calories alone don’t tell you whether something is nutritious.
For example, two snacks could contain the same number of calories but provide very different amounts of protein, fibre, vitamins and minerals.
Rather than asking:
“Is this food low in calories?”
consider asking:
“What am I getting for these calories?”
A 200-calorie snack containing protein and fibre may keep you satisfied considerably longer than a 200-calorie snack primarily made up of refined carbohydrates and added sugar.
Calories matter, particularly when managing body weight, but food quality matters too.
Step 3: Know Your Macronutrients
The nutrition label usually provides information about three major macronutrients:
Protein 💪
Protein helps build and repair muscles and supports many other functions throughout the body.
If you’re physically active, protein becomes particularly important for recovery and maintaining muscle mass.
When comparing snacks or ready-to-eat meals, checking the protein content can help you identify options that are more satisfying and better suited to an active lifestyle.
Carbohydrates ⚡
Carbohydrates are an important source of energy, particularly for runners and other endurance athletes.
Don’t automatically treat carbohydrates as “bad.” Instead, look at the type and overall nutritional profile.
Foods containing whole grains, legumes, fruits and vegetables generally provide more fibre and nutrients than highly refined carbohydrate sources.
Fat 🥑
Fat is an essential nutrient involved in hormone production, cell function and absorption of certain vitamins.
However, it’s useful to distinguish between total fat and saturated fat. Diets high in saturated fat can contribute to elevated LDL cholesterol in some people.
Unsaturated fats, found in foods such as nuts, seeds, fish, avocado and olive oil, are generally preferred as part of a balanced diet.
Step 4: Don’t Ignore Fibre
Fibre is one of the most overlooked numbers on a nutrition label.
It helps support digestive health and can contribute to feelings of fullness. Fibre-rich foods can also help support healthy blood glucose and cholesterol levels.
When choosing between similar products, the one containing more fibre may be the more satisfying option.
Look for fibre in foods such as:
🌾 Whole grains
🥣 Oats
🫘 Beans and lentils
🥜 Nuts and seeds
🍎 Fruits
🥦 Vegetables
For everyday eating, increasing fibre is often more useful than simply trying to reduce calories.
Step 5: Understand Sugar—Not Just “Sugar-Free”
Sugar can be confusing because it may appear under different descriptions.
Look at the total sugars listed on the nutrition panel and, where available, the added sugars information.
Naturally occurring sugars in foods such as fruit and milk are different from sugars added to products such as sweetened drinks, desserts and confectionery.
A product claiming to be “no added sugar” isn’t automatically low in calories or carbohydrates. It may still contain naturally occurring sugars or other ingredients that contribute calories.
This is why it’s better to look at the entire nutrition panel rather than relying on a single front-of-pack claim.
Step 6: Watch Your Sodium
For people who eat a lot of processed or packaged food, sodium is another number worth paying attention to.
Excessive sodium intake can contribute to high blood pressure in salt-sensitive individuals.
Foods that may contain surprisingly high amounts of sodium include:
- Instant noodles
- Processed meats
- Sauces and condiments
- Crackers
- Canned foods
- Ready-to-eat meals
- Some protein and sports snacks
You don’t necessarily need to eliminate these foods. Instead, compare similar products and choose lower-sodium options when practical.
Step 7: Learn to Read the Ingredients List
The nutrition panel tells you how much of certain nutrients are present. The ingredients list tells you what the product is made from.
Ingredients are generally listed in descending order by weight.
That means the ingredients appearing near the beginning make up a larger proportion of the product.
For example, if sugar or a refined flour appears among the first few ingredients, that tells you something about the product’s composition.
However, don’t be frightened by a long ingredient list. A long list doesn’t automatically mean a product is unhealthy, and unfamiliar ingredient names aren’t necessarily harmful.
The nutritional profile and overall diet matter more than whether an ingredient sounds complicated.
Step 8: Don’t Fall for the Front-of-Pack Marketing
This is where label literacy becomes particularly useful.
Words such as:
“Natural”
“Light”
“Low fat”
“High protein”
“Multigrain”
“No added sugar”
can attract attention, but they don’t provide the complete nutritional picture.
For example, a “low-fat” product could still be high in sugar. A “multigrain” product may contain refined grains. A “high-protein” snack may also contain substantial amounts of sugar or saturated fat.
Think of health claims as a reason to look at the label—not as a reason to skip it.
Step 9: Compare Similar Products
One of the best ways to use nutrition labels is to compare products within the same category.
Choosing between two yoghurts? Compare their protein, sugar and calories.
Buying bread? Compare fibre and sodium.
Choosing a protein bar? Check protein, fibre, sugar and total calories.
Looking for a breakfast cereal? Compare fibre, sugar and protein.
You don’t have to find a “perfect” product. Simply identify the option that better fits your nutritional priorities.
Step 10: Consider Your Own Goals
There isn’t one nutrition label that is “best” for everyone.
A marathon runner may deliberately choose a carbohydrate-rich product because carbohydrates are important fuel for endurance exercise.
Someone trying to increase protein intake may prioritise a product containing more protein.
Someone watching their sodium intake may focus on choosing lower-sodium foods.
The same food can therefore be a useful choice for one person and less suitable for another.
Nutrition label literacy isn’t about labelling foods as good or bad. It’s about understanding them.
A Simple 10-Second Label Check
You don’t need to spend five minutes studying every package in the supermarket.
Try this quick checklist:
1️⃣ Serving size – How much am I actually eating?
2️⃣ Calories – How much energy does it provide?
3️⃣ Protein – Is it enough for my needs?
4️⃣ Fibre – Will it help keep me satisfied?
5️⃣ Sugar – How much does it contain?
6️⃣ Sodium – Is it particularly high?
7️⃣ Ingredients – What is actually in the product?
Then ask one final question:
“Does this food fit my nutritional goals?”
If you can answer that, you’ve already become a much more informed food shopper.
Better Choices Start with Better Information
Eating healthily doesn’t mean avoiding every packaged food or calculating every calorie you consume.
It’s about having enough knowledge to make informed choices most of the time.
Once you become comfortable reading nutrition labels, supermarket shopping becomes easier. You can quickly compare products, spot misleading marketing claims and choose foods that better match your nutritional needs.
Most importantly, you become the person making the decision—not the packaging.
The next time you reach for a product on the supermarket shelf, turn it around before putting it in your basket.
Take a few seconds to read the label.
You might be surprised by what you discover.
