Literally the "stuff of life". Proteins make up ¾ of the body. Our muscles, connective tissues, bones, brain, blood, skin, hair, nails as well as hormones and enzymes all have protein as their basic structural material.
|Form body tissue; Provide energy; Maintain water balance; Maintain acid-base balance.
||Meat; Fish; Chicken; Eggs; Milk; Yoghurt; Beans; Cheese.
Provide most of the energy required to move, do work and stay alive. Represented by the starches and sugars.
|Supply energy; Spare protein; Help make essential nutrients; Prevent dehydration; Supply brain energy; Supply fibre; Flavouring and sweetening of foods.
||Potatoes; Pasta; Rice; Bread; Cereals; Porridge.
|Minerals and water
Building and regulating. Minerals are needed in relatively small amounts. Water, an inorganic compound, is classed as a nutrient because it is essential to life.
|Body metabolism; Muscle movements; Body growth; Water balance; Water dissolve nutrients; Water is a transport vehicle for nutrients waste and body substance; Lubricant.
||Fruit and vegetables; Water.