Putting evidence into practice: evidence-based interventions to prevent and manage anorexia.

Anorexia is defined as an involuntary loss of appetite.Approximately 50% of newly diagnosed patients with cancer experience the symptom, which often is accompanied by weight loss and most typically associated with advanced disease.Anorexia significantly affects the clinical course of cancer; it can lead to the development or exacerbation of disease- or treatment-related symptoms, decreased functional status, and diminished quality of life.