What do you understand by ‘proper’ food?

Rashmi, 5 years, she looks about 3 years old. She has very thin arms and legs and a pot belly (stomach like a balloon). She often falls sick. She always feels tired and cannot go to school regularly. She does not have the strength even to play.
Food : She is lucky if she can get a little rice or one roti to eat in the whole day.

Kailash, 7 years. He looks older than his age. His body is fat and flabby. He has pain in his legs. He is not very active. He goes to school by bus and spends many hours watching TV. Food : He does not like to eat homecooked food like dal-rice, vegetables, and roti. The only thing he finds tasty are chips, burger, pizzas and soft drinks from the market.  

Why do you think that the food of Rashmi and Kailash was not proper?