Food labels can help us understand what we are eating and how much of a certain food we should eat
Here is an example of a food label (from Change 4 Life):

What is high or low?
Total Fat
High: more than 17.5g of fat per 100g
Low: 3g or less of fat per 100g
Saturated Fat
High: more than 5g of saturated fat per 100g
Low: 1.5g or less of saturated fat per 100g
Sugar
High: more than 22.5g of total sugars per 100g
Low: 5g or less of total sugars per 100g
Salt
High: more than 1.5g of salt per 100g
Low: 0.3g or less of salt per 100g
Remember ingredients are always listed with the largest amount first, check the ingredients list to see how far down added salt and sugar is!
Check out this great video from Change 4 Life for a quick guide to food labels:
You can also download the brilliant Food Scanner app for free via Change 4 Life