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Concept of Nutrition and its Relation to Health

Nutrition is a scientific discipline which essentially deals with food and  the related issues. The simple meaning of nutrition is "the study of what happens to food once it is being consumed by the individual." 

Nutrition is closely associated with health. If a person eats right kind of foods in right amounts, that person will keep good health provided no other factors intervene. If there is any imbalance in eating pattern i.e., eating too little or too much will result in poor health. It  must be emphasized, however, that though good food is one of the crucial factors in ensuring health, it is not  the  only one. The food  eaten must not  only be nutritious but also it must  be complete and clean. If this is not so, the person eating the food would get ill even if the  food is nutritious. 

If the right food is not consumed in right quantities by a person it results in malnutrilion. 'This  malnutrition can result in either inadequate or excessive intake of food. In other words, malnutrition refers to both undernuuition and overnutrition. Undernutrition means inadequate intake of right food. And overnutrition means excessive intake ol: right  food  But undernuuition and overnutrition both result in  ill health. One example of undernutrition is  'vitamin A deficiency' when young children do not consume enough  vitamin A rich foods; their eyes are affected initially and blindness results ultimately. An example of overnutrition is 'obesity'.  When a person  takes in more energy than he is able to  spend  his  daily activities, he accumulates fat in the body and his  weight increases. If the weight increases substantially, the person  becomes obese. 

Now you will came to know  what is  nutrition  and its relation to health and imbalance in rood intake. You will  be exposed to the term  'nutritional  status' It is a  condition of health of an individual as influenced by the utilization of foods consumed. To assess the nutritional status all you have to do is  to collect the following information: 
  • What  roods and how much are being  consumed? 
  • What observable (clinical) signs of ill health? (e.g., bleeding gums) 
  • What is the level of nutrients in the blood  and urine? (can be done in  the clinical laboratories) 


If a person does not consume enough of foods rich in vitamin C (citrus fruits, guava etc.) its level in the blood will drop and one can predict that the person is  likely to get vitamin C deficiency (bleeding gums etc.). 

Nutritional status can also be substituted with a term nutritional health, but generally nutritional status is referred to a group of individuals in a society. Hence nutritional status is assessed for a group of individuals in a society. Such information falls under the preview of community nutrition.

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