Nutrition in Advanced Cancer
Advanced cancer is often associated with cachexia.[1,2,3,4] Individuals diagnosed with cancer may develop new, or worsening, nutrition-related side effects as cancer becomes more advanced. The most prevalent symptoms in this population are the following:[1,2,3]
- Weight loss.
- Early satiety.
- Taste changes.
As defined by the World Health Organization, palliative care is an approach that improves the quality of life of patients and their families facing the problems associated with life-threatening illness, through the prevention and relief of suffering by means of early identification and impeccable assessment and treatment of pain and other problems, physical, psychosocial, and spiritual. The goal of palliative care is to give relief of symptoms that are bothersome to the patient. Although some of the symptoms listed above can be effectively treated, anorexia, though common, is a symptom that is often not noted as problematic for most terminally ill patients but is distressing to most family members; this distress may vary according to cultural factors. Several studies have demonstrated that terminally ill patients lack hunger, and of those who did experience hunger, the symptom was relieved with small amounts of oral intake.
Decreased intake, especially of solid foods, is common as death becomes imminent. Individuals usually prefer and tolerate soft-moist foods and refreshing liquids (full and clear liquids). Those who have increased difficulty swallowing have less incidence of aspiration with thick liquids than with thin liquids.
Dietary restriction is not usually necessary, as intake of prohibited foods (e.g., sweets in the diabetic patient) is insufficient to be of concern. As always, food should continue to be treated and viewed as a source of enjoyment and pleasure. Eating should not just be about calories, protein, and other macronutrient and micronutrient needs.
Diet restrictions are sometimes appropriate, however.[6,7] For example, people with pancreatic cancer, gynecologic cancer, abdominal carcinomatosis, pelvic masses, or retroperitoneal lymph node masses may have bowel obstruction less frequently when adhering to a prophylactic soft diet (i.e., no raw fruits and vegetables, no nuts, no skins, no seeds). Any restriction should be considered in terms of quality of life and the patient's wishes.