All living need energy to grow and stay alive.Human beings and animal get their energy from the food they eat.We need food to supply the raw materials to make new cells and help us to keep breathing,keep the heart pumping,keep the body temperature at 37 degree celsius and carry out various other activities.
Just eating whatever food we want will not ensure that we will grow properly and stay healthy.We need to have a balanced diet-a diet that provide us with all necessary nutrient and enough to set us through each day.A balanced diet should have the correct amount of carbohydrates, proteins,and fat as well as vitamins and minerals.It should also contain and adequate supply of water.
Carbohydrates and fat provide us with energy.Fat are also needee to enable certain vitamins to be absorbed by the body. Proteins, vitamins, and minerals are needed for growth and repair of cells in our body. Water, although not a a nutrient,is essential because we veed it to keep our cells working properly and to carry chemicals around the body.
No single food type can supply all the essential nutrient that we need. Vegetables and fruits are good for the body but they will not provide with enough protein to keep us healthy.On the other hand,if we eat only eggs, fish and meat,we would be getting plenty of protein but our diet would be lacking in carbohydrates,fibres, and some vitamins.
Thus,to lead healthy life,we need to ensure that we have a balanced diet consisting enough of main type of food.