Carbohydrates: for energy.
Protein: used for growth, repair and replacement of tissues/bodies.
Fat: provides/stores energy.
Vitamins: small amounts to maintain healthy tissues, lack can cause deficiency disease e.g. lack of vitamin C can cause scurvy.
Minerals: minimal amounts for good health, lack of these can cause deficiency disease e.g. lack of iron can cause anemia ( needed to make haemoglobin).
Fibre: provides bulk and prevents constipation.
Water: essential for body processes and functions e.g. sweating.