“The food which contains all essential food nutrients which are necessary and essential for healthy growth of the body and proper functioning of the whole parts of body.”
Food is a complex mixture of chemical substances.
It performs following useful functions when eaten and absorbed by the body.
i) Produces energy
ii) Promote growth
iii) Repair the tissues
iv) Regulate various processes
Nutrients are the chemical components of food capable of performing above functions.
Example: milk is a balanced diet although it does not contain iron.
Following are the major components of Balanced Diet and their source and functions:
Source: Honey, Sugarcane, Wheat, Maize, Potatoes.
Functions: Provide energy
Source: Butter, Cheese, Soya bean, Mustard etc.
Functions: Provide Energy
Source: Meat, Eggs, Fish, Milk, Pulses etc.
Functions: Essential for growth
Source: Fruits and Vegetables.
Functions: Important for proper physiologic and metabolic functions of the body.
a) Water Soluble Vitamins: B1, B2, B6, B12, C
b) Fat Soluble vitamins: A, D, E, K
Minerals are those inorganic substances which play a key role in the maintenance and building of the body tissues. The most important minerals of balanced diet are as under:
Phosphorus: is necessary for bones and teeth.
Iron: is an essential component of blood.
Iodine: is necessary for thyroxin which is secreted from thyroid gland.
Calcium: is necessary for bone development.
Source: Fruits, Vegetables
Functions: It is constituent of blood, lymph, hormones and other secretions of the body.
For complete Everyday Science notes click here.