The malnutrition is a disease due to missing one ore more components from food, appropriate to well being and surviving.
The components which missing might trigger the malnutrition are the vitamins, minerals, or the proteins.
Some areas on the globe have an intrinsic characteristic that determines people have some components in food, less than required.
The malnutrition can be primary or secondary, the primary form is due to missing components in food, and secondary is triggered by inability to absorb or process the components.
Some forms of primary malnutrition take place by example in mountains, where people have not enough vegetables in their food, or desert, where population doesn't have access to drinkable water.
Secondary forms of malnutrition can be generated by kidneys, liver, thyroid or intestines, especially in growing teenagers which require more energy and more diversified nutrients.
Another form of secondary malnutrition is the one triggered by burns, surgical treatments, fever, diarrhoea, or pregnancy.
Symptoms of malnutrition are dizziness, nausea, and tiredness.