Clinical approaches to nutritional support in cancer.

Anorexia and weight loss are frequent complications of cancer and AIDS. Assessment of dietary records and nutritional requirements in patients with decreased food intake and weight loss will assist the dietitian, nurse, or physician in initially addressing the problem. Patients may respond well to nutritional counseling and food supplements, but persistent severe anorexia is common. Various pharmacologic strategies to reverse anorexia and weight loss have been tested, including corticosteroids, anabolic steroids, cyproheptadine, hydrazine sulfate, dronabinol, and megestrol acetate. Dronabinol was recently found to improve appetite in AIDS patients. Megestrol acetate is so far the only agent associated with improvements in appetite and weight in patients with cancer and AIDS. Enteral and parenteral nutrition may be helpful in selected patients with gastrointestinal obstruction or dysfunction, but it is not generally indicated in patients with end-stage disease.