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Diet and Cancer Treatment: Tips for Healthy Eating

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Diet and Cancer Treatment: Tips for Healthy Eating Diet and Cancer Treatment: Tips for Healthy Eating Fact Sheet 9.332 Food & Nutrition Series | Health By J. Clifford and C. Didinger* (12/19) Quick Facts A Plant-Based Eating weight can predict a reduced A largely plant-based Pattern response to treatment, thus those diet with limited undergoing treatment for cancer consumption of alcohol, should try to maintain a healthy red meat, and Emphasis on whole foods of plant processed meat is weight and avoid losses or gains origin can promote health, provide recommended for those in weight. Research shows that key nutrients, and support at risk for or with cancer patients who retain a maintenance of a healthy weight. cancer. Institutions like the World Cancer healthy weight and maintain a Side effects from Research Fund recommend limiting good nutritional status have fewer cancer treatment may red meat intake (i.e. beef, lamb, complications, regardless of the include reduced and pork) and avoiding processed form of treatment. Fewer appetite, taste alterations, diarrhea, meat (e.g. bacon, ham, and hot complications result in improved constipation, and dogs). See fact sheet 9.313 Diet response and tolerance of treatment, reduced illness, fewer difficulty swallowing, and Cancer Prevention for more which may result in infections, shorter hospital stays, details about healthy eating tips. weight loss. and an overall higher quality of life. It is important to A healthy weight is important for maintain a healthy increased energy levels, strength, weight during cancer and coping with the side effects of treatment, which may cancer treatment. reduce the risk for complications. Dietary Tips for Healthy Weight During treatment, Maintenance immune system function may be compromised, so it is The following tips are useful for all important to always Cancer and Nutrition: The cancer patients. However, for practice safe food Importance of Healthy those experiencing weight loss, handling techniques. Weight Maintenance maintaining a healthy weight by consuming protein and calorie-rich *J. Clifford, Extension foods should be a primary goal. Nutrition Specialist, Weight loss and malnutrition are Department of Food Science common problems for cancer Human Nutrition; C. Didinger, patients, although some cancer Eat a variety of whole foods Graduate Student, Department treatments may result in weight An eating pattern that emphasizes of Food Science Human Nutrition. Previously updated gain. Even a small loss in body whole, plant-based foods is by: Bellows and R. Moore. extension.colostate.edu 1 © Colorado State University Extension. 12/10. Revised 12/19. important for a nutritionally complete diet. alter the way that the body makes energy Incorporate whole grains, legumes, and lean from food. With a cancer diagnosis, a lack protein sources, like non-fat or low-fat dairy. of appetite may also be a result of Although it is important to eat fruits and emotional distress or depression. vegetables, it may be advisable to choose higher calorie options to avoid weight loss, Changes in bowel habits or bladder such as sweet potatoes, squashes, bananas, function avocados, and dried fruit. Constipation, diarrhea, or pain when urinating may result from colon, bladder, Limit caffeine, sugar, sodium (salt), and and prostate cancer. This may interfere alcohol with proper nutrient absorption and result Exceptions for this guideline include those in loss of fluids and electrolytes. experiencing weight loss, as fat is a good source of calories that will aid in weight gain. Trouble swallowing Difficulty chewing or swallowing may result Hydration from head and neck cancer, or esophageal Drink as many fluids as possible throughout cancer. These symptoms may cause the day, as dehydration may be a problem vomiting, early satiety, and fluid and with nausea, constipation, or diarrhea. Eat electrolyte imbalances. foods with high water content, such as vegetables, fruits, soups, smoothies, and 2. Diet and Cancer — Side Effects of popsicles.If weight loss is a problem, try high- Treatment calorie fruit smoothies or natural juices. Refer to a medical professional for advice on specific Surgery dietary recommendations. The effects of surgery on the diet vary greatly depending on the location of the Coping with Cancer’s Effects on tumor and the surgical procedure used. If the Diet surgery is scheduled, talk to the doctor about what side effects might develop. When a side effect does develop, a doctor The effects of cancer on the diet fall into two or registered dietitian can assist with the main categories: diet. Fatigue and weight loss are common symptoms. 1.Dietary side effects of the disease itself 2.Dietary side effects of cancer treatment Chemotherapy Chemotherapy works by destroying rapidly 1.Diet and Cancer — Side Effects of the Disease dividing cells, such as cancer cells. It also destroys normal body cells that divide rapidly, such as those in bone marrow and Loss of appetite and weight loss those that line the small intestine. Side Early signs and symptoms of cancer include a effects can include nausea, vomiting, decreased ability to eat, digest, or absorb food diarrhea, or constipation, all of which may and nutrients. Cancer cells may use the body’s adversely affect dietary intake. Alterations energy reserves, or release chemicals that 2 in taste are also common with patients bitterness. This changes the flavor of foods undergoing chemotherapy. In addition, dry like sweets, desserts, fruits, and vegetables. mouth is a frequent symptom, with Some individuals may experience an unusual decreased saliva production impacting the dislike for certain foods, flavors, or odors; this amount of chemicals released from food, may develop when unpleasant symptoms are contributing to alterations in taste. tied to a food recently eaten. Some studies indicate that zinc supplementation may Radiation therapy protect against taste disorders. The dietary side effects of radiation therapy depend on the location of the tumor. For Overall, these side effects can result in instance, therapy for a head or neck tumor decreased calorie intake and not meeting often causes nausea, fatigue, loss of daily energy and nutrient requirements, appetite, swallowing pain, and dry mouth. causing weight loss. In addition to effects Also, radiation can damage taste cells and on appetite and body weight, psychological inhibit proliferations of new cells. Thus, well-being can also be affected. The pleasure a frequent side effect of patients undergoing associated with eating can be negatively radiation therapy is taste alteration. impacted, resulting in social and emotional impacts. Taking steps to Changes in Food’s Flavor and Odor improve nutrition and the eating experience can thus help improve physical and Cancer and treatment often result in taste emotional well-being. Everyone is different, alterations. For example, chemotherapy can but Table 1 presents potential side effects result in the reduced ability to taste and coping strategies: sweetness and a higher sensitivity to 3 4 Cancer and Nutrition: Guidance Before, During, and After Treatment Before Cancer Treatment Stock nutritious snacks in case you do not feel like preparing a meal, including Make sure your body is well-nourished snacks you can eat even when not before treatment begins. feeling well. Plan ahead and stock your kitchen with Have a support group ready to help foods you can easily prepare. with preparing meals and grocery Cook in advance, freezing meal-sized shopping. portions. Look into a grocery delivery service for your home. 5 During Cancer Treatment Additional Resources Eat a healthy diet rich in nutritious foods Keep the doctor informed of diet problems, to help your body function at its best. treatment difficulties, and changes in Between treatments, nourish your body condition. Hospital registered dietitians and well when an appetite is present. those in private practice can help with Incorporate lots of whole, plant-based dietary problems. They help patients better foods, such as legumes, whole grains, understand the effects of cancer and its vegetables, and fruits. treatment may have on diet. Maintain a healthy weight and remain physically active. The American Cancer Society can provide Be patient when coping with side effects names of support groups or other services, such as changes in taste preference and the such as Meals on Wheels, available to loss of taste and smell. cancer patients in the community. Contact the American Cancer Society at: 1-800-227- 2345, or visit their website at: www.cancer.org. The National Cancer Institute offers a helpful booklet called Eating Hints for Cancer Patients: Before, During, and After Treatment. This document can be accessed online at: After Cancer Treatment www.cancer.gov/cancertopics/coping/eating hints. Free copies can be obtained by calling Cancer survivors are at an increased risk for 1-800-638-6694. developing other cancers; therefore it is important to minimize one’s risk through a The Oncology Nutrition Dietetic Practice nutrient-dense diet, healthy weight Group of the Academy of Nutrition and maintenance, and living a physically active Dietetics: www.oncologynutrition.org lifestyle. For more information, see fact sheet 9.313 Diet and Cancer Prevention. Following the USDA Dietary Guidelines is For additional help and information, call the recommended for proper nourishment, which Cancer Hotline at 1-800-4-Cancer. can help rebuild strength after treatment. 6 References American Cancer Society. (2017). ACS guidelines for nutrition and
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