Medical nutrition therapy (MNT) is a therapeutic approach to treating medical conditions and their associated symptoms via the use of a specifically tailored diet devised and monitored by a medical doctor physician, registered dietitian, or professional nutritionist. Medical nutrition therapy may be useful in treating or controlling heart disease, diabetes, AIDS, cancer, kidney disease and many other health related conditions. Medical nutrition therapy is critical to the management of a variety of chronic diseases, is effective in managing disease, and is cost-effective.