Understanding the Traffic Light System
In today's fast-paced world, making informed food choices can significantly impact our health. Food labels play a crucial role in helping us understand the nutritional value of what we consume. The attached infographic introduces a simple yet effective "traffic light" system to guide us in making healthier food choices. Let's look into how to read and interpret these labels .
The Traffic Light System
The traffic light system categorises food into three distinct groups: Low (Green), Medium (Amber), and High (Red). These categories are based on the content of fat, saturated fats, sugars, and salt per 100 grams of the product. Here’s a breakdown of what each colour represents:
- Green (Low): A healthier choice.
- Amber (Medium): Okay most of the time.
- Red (High): Just occasionally.
If the label isn’t colour coded, use this label decoder as a guide.

The fibre content is important when you are looking at foods such as bread, cereals, pasta and rice. High fibre - 6g or more per 100g.
What Each Measure Means
- Fat
• Low: 3g or less
• Medium: 3.1g – 17.5g
• High: More than 17.5g
Fat is essential for our body, but it's important to consume it in moderation. Foods low in fat are generally healthier choices, while those high in fat should be eaten sparingly. - Saturated Fats
• Low: 1.5g or less
• Medium: 1.6g – 5g
• High: More than 5g
Saturated fats can raise cholesterol levels in the blood, increasing the risk of heart disease. Keeping an eye on the saturated fat content can help manage these risks. - Sugars
• Low: 5g or less
• Medium: 5.1g – 22.5g
• High: More than 22.5g
High sugar intake is linked to various health issues, including obesity and tooth decay. Opting for foods with lower sugar content is beneficial for maintaining overall health. - Salt
• Low: 0.3g or less
• Medium: 0.31g – 1.5g
• High: More than 1.5g
Excessive salt intake can lead to high blood pressure and other cardiovascular problems. Choosing low-salt options can contribute to better heart health.
Fibre Content:
The infographic also highlights the importance of fibre, stating that high fibre foods contain 6g or more per 100g. Fibre is crucial for digestive health, helping to prevent constipation and reduce the risk of bowel diseases. Including high-fibre foods in your diet is a key component of a balanced, healthy diet.
Practical Tips for Using the Traffic Light/food labelling system
- Aim for More Green: When shopping, try to choose more foods that fall into the green category. These are typically lower in fat, saturated fats, sugars, and salt, making them healthier options.
- Moderate Amber: Foods in the amber category are acceptable to eat most of the time. They provide a balance but should not dominate your diet.
- Limit Red: Reserve foods in the red category for occasional treats. These foods are higher in fats, sugars, and salt, which can contribute to health issues if consumed frequently.
- Check Serving Sizes: Remember that the traffic light labels are based on 100g portions. Be mindful of the actual serving size you consume, as it may differ from this standard measurement.
- Balance Your Diet: Use the traffic light system as a guide to create a balanced diet. Incorporate a variety of foods to ensure you're getting a wide range of nutrients.
Conclusion:
Understanding and using the traffic light system can empower you to make healthier food choices. By paying attention to the fat, saturated fats, sugars, and salt content, as well as prioritising high-fibre foods, you can better manage your diet and improve your overall health. Remember, the goal is to find a balance that supports your well-being and lifestyle.
As a Galway-based CORU Registered Dietitian, Clinical Nutritionist, and Trained Psychotherapist, I encourage you to take this information and use it to make informed decisions about the foods you eat. By integrating these principles into your daily life, you can create sustainable, healthy habits that will benefit you in the long run.






