2.23 Understand that a balanced diet should include appropriate proportions of carbohydrate, protein, lipid, vitamins, minerals, water and dietary fibre

A balanced diet should include correct proportions of carbs, proteins, lipids, vitamins, minerals and dietary fiber. This can be represented visually in the food pyramid. 

Figure 1: Food pyramid

For example, if a diet is too high in lipids and simple carbs (sugars), it is likely that the person will gain weight in an unhealthy way and experience health problems, such as clogged arteries due to excess cholesterol.