It's important to eat healthy food. A balanced diet includes- 

carbohydrates( energy- giving food) - they give us energy. Example- rice, starch.

proteins( body building food)- they recover wounds and build new cells. Example - tofu , dal.

vitamins and minerals( protective food)-  they help us stay far from diseases . Example- fruits and vegetable

water- it keeps us hydrated.

roughage- it helps us to remove wate materials from our body. They are found in fruits and vegetables.