The diet which meets all the body requirements is called balanced diet . it contains all the components in optimum level. Nutrients in their balance proportions is necessary to keep the body healthy. If a nutrient is not taken for a long time , it will cause deficiency of the nutrient ., deficiency symptoms appears in the body. The nutritional defiecincy also known as malnutrition. Both over nutrition and under nutrition will leads to ill health. Some of the nutritional disorders are discussed here

Obesity

It is due the intake of excess fat contain food. It is commonly seen in adolescent population. The characteristic symbol of the obesity is the accumulation of the fat beneath the skin and also around the vital organs . obesity may cause heart diseases ,breast cancer, etc.

Kwashiorkor

This is a protein deficney ddisease . it is commonly seen in childerns .the symptoms of kwashiorkor are oedema, stunted growth , mental retardation , thin legs, bulged eyes etc

Marasmus

It is also a protein defincy disease . it is seen in children between 1 and 4 years. The symptoms are physical weakness, flabby body, depressed eyes etc.