Written by Inara Hasanali, M.A.  | 
Medically Reviewed by Dr. Sunil Shroff, MBBS, MS, FRCS (UK), D. Urol (Lond) on Mar 03, 2016

Nutrition Facts - About

Food as we know is essential for the growth and maintenance of the human body. However, have you ever considered the question of why does an individual eat food?

The answer to this question is that food performs three different functions.

They are:

  • Physiological Function
  • Psychological Function
  • Social Function

Physiological function

All food goes through a complex process of digestion, absorption, assimilation and excretion. Food provides us with calories, which are metabolized in the body to provide energy. Energy is required for all the functions of the body including heart beat, homeostasis, functioning of the brain and other vital organs the body. This is the physiological function of food.

Psychological Function

Food always gives us a feel of satiety or "satisfaction." A normal well-balanced individual human eats food for both physiological and psychological satisfaction. However, sometimes individuals’ mis use food as they consider it a factor influencing their self-esteem and become victims of diet/food related conditions like anorexia or bulimia. Some individuals also go on "bingeing sprees" and lose control over their eating habits.

Social Function

From time immemorial food has been used to bring together people for celebrations as well as sad occasions. Food binds people together and no wedding/funeral is complete without the presence of food. It promotes a feeling of sharing and thus has a social function.

Being healthy and eating well is an amalgamation of all these essential functions of food.

Negative Calorie Diet

Eat Balanced Diet and Live a Long and Fruitful Healthy Life

Latest Publications and Research on Why Do We Eat - Nutrition Facts


@Guest Tuesday, June 11, 2013


ijeoma Thursday, May 9, 2013

food is essential for life

dev_kelvin Wednesday, November 2, 2011

we eat to shit wel and well

lew95 Sunday, March 22, 2009

is this the importance of balanced diet???

Nurullah120 Sunday, February 3, 2013


AshokJaswani Tuesday, December 2, 2008

Excellant detail. Definately going to help the mankind.

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