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How to Read Food Labels Like a Nutritionist

Ever picked up a product, flipped it over, and stared at the food label like it was written in another language? Making informed food choices starts with understanding food labels and that’s exactly what we’re here to help with. If the packaging claims have ever left you wondering, don’t worry, we’ll break it all down so you can read it with confidence and know exactly what it means.
Think of the nutrition facts label as a backstage pass to your food products. What you see on the front is the show, but what’s on the back tells the real story.
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What are Food Labels and Why Do They Matter?

Those little food stickers you see on packaging? They’re not just decoration, they’re there to guide you toward better decisions about what to eat and what not to eat. Product labelling is there to help you understand what’s inside your food. Food labels break down calories, nutrients, ingredients, and even safety information.

How to Read Food Labels Like a Pro

A package might look appealing at first, it’s designed to catch your attention, but once you turn the package around, the numbers can tell you a very different story.  Let’s get into the sauce:

First Things First: Don’t Be Fooled by the Front

“Low fat.” “All natural.” “Sugar-free.
These claims on food label stickers can sound convincing, but they don’t always tell the full story. That’s why turning the package over is necessary. The front sells, but the back informs.

Serving Size

Once you flip the package over, that’s where the real story begins. But here’s the catch most people miss: everything on the label is based on a serving size.
It’s like reading a map with the wrong scale, if you eat double the serving, you’re also doubling the calories, sugar, and everything else. Always check this first before diving into the rest of the nutrition facts on the label.

Calories

Calories are simply the energy your body uses to function. The food label gives you a snapshot, usually based on a 2,000-calorie daily diet. But your needs may differ depending on your lifestyle, habits, and goals. What matters more than counting calories is understanding where those calories come from in the food products you choose. 
And if you’re trying to eat well but aren’t sure what works best for you, book a free consultation with a nutrition expert to find a meal plan that truly fits your needs.

Nutrients

This is where the real story unfolds. When selecting food products, there are two main things to consider: what to limit and what to prioritise. As a quick guide:
  • Limit: Saturated fats, added sugars, and sodium
  • Look for more: Fibre, protein, vitamins, and minerals
To make things easier, here’s a quick breakdown of the key nutrients you’ll find on food labels and what they actually mean: 
Nutrient What It Means What to Aim For Common Label Claims
Total Carbohydrate Includes sugar, starch, and fibre Check total grams if tracking carbs
Dietary Fibre Supports digestion and gut health Aim for more (25–38g/day) High fibre: ≥5g per serving; Good source: ≥2.5g per serving
Protein Supports muscles, recovery, and overall health Include regularly in meals %DV may be listed if claims are made
Added Sugars Sugars added during processing (not natural sugars) Limit intake Sugar-free: <0.5g; Reduced sugar: ≥25% less; No added sugar: none added during processing
Total Fat Includes healthy and unhealthy fats Focus on unsaturated fats, limit saturated & trans fats Fat-free: <0.5g; Low fat: ≤3g; Reduced fat: ≥25% less
Sodium (Salt) Affects blood pressure and heart health Limit to <2,300mg/day Sodium-free: <5mg; Low sodium: ≤140mg; Reduced sodium: ≥25% less
A simple rule of thumb? If a product is high in the “limit” category and low in the “good stuff,” it might not be the best everyday choice.
Read about the sources of fibre and more on Fibremaxxing here.

% Daily Value

The Percent Daily Value (%DV) helps you quickly understand if something is high or low in each nutrient. You can find them listed in the right column of the label.
  • 5% or less = low
  • 20% or more = high
Simply put, aim for lower %DV for nutrients you want to limit (like added sugar, sodium, and saturated fat) and higher %DV for nutrients you want more of (like fibre, calcium, and iron). No calculator needed, this part of the food label does the math for you.

Allergen Labels and Food Safety

Labels reflect food production standards, ensuring transparency about what goes into your food. Beyond nutrition, food safety is another big reason labels matter. Allergen labels identify ingredients that could trigger reactions for some people, like nuts, dairy, or gluten. Which is why this isn’t just helpful, it’s essential.

Compare Before You Choose

Choosing between two similar food products? Compare their labels side by side.
You might be surprised that what looks healthier on the outside isn’t always the better option on the inside. A quick comparison can help you make more informed food choices without overthinking it.

Healthy Meal Delivery

Healthy Meal Delivery App
Tired of staring at food labels and guessing what’s actually good for you? We get it! Reading food labels is one thing, but putting that knowledge into practice every day can be tricky. 
That’s where the Calo App comes in, taking the hard work off your plate! We deliver perfectly portioned, fully personalised healthy meals designed to meet your needs and delight your taste buds. Take the first step toward effortless, informed eating and enjoy food that’s as good for your body as it tastes.

The Bottom Line

Once you get the hang of it, those numbers and percentages start to make sense, and reading food labels feels far less overwhelming. Instead of guessing what to eat, you’ll be making confident, informed choices.
Because eating well isn’t about cutting out everything you love, it’s about understanding what’s on your plate and finding the right balance. And that’s a skill worth having.
Read about the top 10 nutrition myths debunked and more about why we crave junk food here, or explore more topics related to health on the Calo blog

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