Medical nutrition therapy includes a wide variety of treatments based on the nutritional status of the patient. The intensity of the therapy varies greatly, ranging from a few changes in dietary intake to tube or intravenous feeding. Medical nutrition therapy is critical to the management of a variety of chronic diseases, is effective in managing disease, and is cost-effective. Medical nutrition therapy lies in the extremely high usage of parenteral and enteral nutritional formulas in many health care settings today. Parenteral feedings may allow people who are not able to take any food orally to get the nutrients that they need to survive.