This report is a summary of a meeting convened by the Cystic Fibrosis Foundation to develop a consensus among nutrition specialists and cystic fibrosis care givers regarding optimal nutritional management of patients with cystic fibrosis. The first section of the report provides a rationale for emphasizing nutritional management of this genetic disorder. The multiple factors causing malnutrition and a negative energy balance are outlined. The second section provides guidelines for routine assessment of nutrition in these patients. Five categories of nutritional status are defined based on ideal weight for height, age, and gender. These categories are used to formulate a graded response for nutritional intervention. Recommendations are provided for routine dietary supplements, vitamin supplements, and pancreatic enzyme replacement. The primary aim of this report is to educate clinicians as to the importance of frequent assessments and early intervention.