Diet - cancer treatment

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People with cancer need special nutritional planning and management.

See also: Radiation enteritis

Cancer treatment and nutrition

People with cancer are at risk for developing nutritional deficiencies. The deficiencies may be the result of the cancer itself, or the side effects of common cancer treatments such as surgery, chemotherapy, and radiation therapy.

Cancer directly affects your nutritional status by changing the body's metabolism and causing you to lose your appetite. Your body increases energy use, which means you need more calories to maintain your current weight and lean body mass. Cancer-associated loss of appetite is probably the result of physical changes but may also be due to a psychological response to the disease.

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Cancer also causes individual changes in the body's ability to break down carbohydrates, protein, and fat. These changes lead to the loss of muscle and fat.

Several things may contribute to the type and degree of nutrient deficiencies:

• Where in the body the cancer occurs
• How severe the cancer is at the time of your diagnosis
• What symptoms you have
• The type of cancer treatment, and how often you receive it
• Side effects associated with your cancer treatment
• How the cancer affects your ability to eat and tolerate food and nutrients

Review Date: 07/22/2010
Reviewed By: Jennifer K. Mannheim, ARNP, Medical Staff, Department of Psychiatry and Behavioral Health, Seattle Children's Hospital; and George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org).