2.25 Identify the sources and describe the functions of components of the diet

what is a balanced diet

a diet that consists of appropriate amounts of:

1. carbohydrates

2. proteins

3. lipids and fats

4. vitamins

5. minerals

6. water

7. dietary fibre

carbohydrate examples

starch and sugars

carbohydrate dietary sources

pasta, bread, cereal

carbohydrate function

provides body with its primary source of energy

proteins examples

haemoglobin, triglycerides

protein dietary sources

fish, olive oil

protein function

helps body repair cells and make new ones + energy source

vitamin A dietary source + function

tomato - improve vision, growth, cell division

vitamin C dietary source + function

citrus fruits - protects cells and keeps them healthy

vitamin D dietary sources + function

salmon - reduction of inflammation and cell growth

minerals examples

calcium + iron

calcium dietary source + function

milk - helps muscles contract properly

iron dietary sources + function

red meat - production of haemoglobin (protein that carries oxygen in RBCs to the rest of the body)

fibre example

cellulose

fibre dietary sources + function

legumes - helps keep food moving fast through the digestive system