The term malnutrition covers which of the following conditions?

Malnutrition is a term used to refer to any changes in the nutrition available to the human body. It may be overnutrition when the body has an excess of nutrients and undernutrition when it is deficient in nutrients. The overconsumption of junk food is the main reason for overnutrition. The lack of essential minerals and vitamins due to poverty is the reason for undernutrition. The limited health supply and some health conditions might lead to malnutrition. It has severe consequences that affect the health of the body. Infants and young children below the age of six are prone to malnutrition.