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Food is the basic necessity of life. Physical and mental wellbeing can be achieved through the consumption of adequate food. Food supplies nutrients to the body which helps to prevent disease and keep us healthy. So, a well balanced meal that contains 6 types of nutrients is indispensable to keep the body fit, otherwise nutrient deficiency happens. In this chapter, we will discuss more about food, nutrition and nutrient.

Food
Food is what people and animals eat to survive. Food is any nutritious substance when ingested and assimilated through digestion performs a wide range of important functions in our body.

Function of food
Nutrients of food perform wide range of functions in our body. Such as-
• Body building, growth, repair and maintenance.
• Yields heat & supply energy to the body.
• Protects body by enhancing immunity.

Nutrition
Nutrition is the process which supplies energy, influence our growth, development and enhance immunity through digestion and absorption of the smallest component of food. Nutrients are chemical components of food that carry out necessary functions in our body.

There are mainly 6 types of nutrients.
(a) Protein
(b) Carbohydrate
(c) Fat or oil
(d) Vitamin
(e) Minerals, &
(f) Water