When there is eating disorder or inadequate intake of daily nutrition, such as:
Malnutrition and anorexia
Difficulties in swallowing
Digestion disturbances, such as nausea and vomiting
Fasting condition for pre-diagnostic or pre-operative preparation
In this situation, energy requirement is much higher than the energy intake, thus your body will receive less nutrition than what it requires. The most visible impact is weight loss or reduction in the quality of life. It happens because you lose the energy to do any activity or your body does not respond well to the treatment. This is the reason why balanced oral nutrition supplement is needed.