It's really not a mystery; in fact it's pretty simple. All foods can be put into one of five groups. The secret is to make sure you eat a variety of foods from each group.

The groups are:

• Carbohydrates
• Fruit and vegetables
• Dairy products
• Protein
• Fats and Sugars

Unless you have a specific food allergy the trick is to eat lots of the top four and just enough of the bottom one!

View our healthy eating guide for more information