Why we need foods high in Carbohydrate (by Difference) ?

Carbohydrates are a source of energy quickly consumed by the body. There are two kinds of carbohydrates: - Simple carbohydrates will be directly degraded by digestive enzymes and saliva in order to be immediately converted into energy.
- Complex carbohydrates will be transformed into glucose and glycogen to be stored in the liver and muscles. They become an energy storage.

Our daily requirement is about 4 g carbohydrate per kilogram per day. (Example: 40kg person should eat the equivalent of 160g of carbohydrate per day). It is estimated that 4g of carbohydrates equals 4 calories that will be converted into 17kJ of energy.