(a) A balanced diet is necessary for the growth and development of the body. A balanced diet provides raw materials and energy, in an appropriate amount, needed for the proper growth and functioning of the healthy body. It improves our immunity also. Lack of food in the form of a balanced diet makes us susceptible to diseases.
(b) Health is a state of being well enough to function well physically, mentally and socially. These conditions depend upon the surrounding environmental conditions, e.g. if there are unhygienic conditions in the surrounding area, it is likely we might get infected or diseased. Similarly, a good social environment is needed for mental and social health.
