Benefits of Good Nutrition During Cancer Treatment

Introduction:

Nutrition is very important for the proper health and well-being of cancer patients. Tailored nutrition goals are essential for each person undergoing treatment, as cancer and its therapies can lead to various side effects that impact dietary intake and nutritional status. In these cases, a registered dietitian becomes a vital healthcare team member, offering specialized guidance to manage and mitigate these challenges.

Malnutrition, often exacerbated by conditions like anorexia (loss of appetite or desire to eat) and cachexia (syndrome causing severe weight and muscle loss), poses significant risks and underscores the importance of personalized nutritional support during cancer care. This article discusses the importance of nutrition in cancer care and highlights critical aspects related to treatment and dietary management.

What Is Cancer and How Does It Affect Nutrition?

Cancer is marked by the uncontrolled growth and spread of abnormal cells within the body. These abnormal cells can form tumors (tissue masses) and interfere with normal bodily functions. If left untreated, cancer can spread (metastasize) to other parts of the body through the blood and lymphatic systems.

Effects of Cancer Treatment on Nutrition:

• Chemotherapy and Hormone Therapy: These treatments can cause appetite loss, nausea, vomiting, dry mouth, mouth sores, taste changes, swallowing difficulties, and digestive issues.

• Radiation Therapy: Due to targeted therapies, some people may experience side effects like loss of appetite, nausea, vomiting, dry mouth, sore mouth, taste changes, swallowing pain, and digestive disturbances.

• Surgery: Surgical procedures increase nutrient and energy needs for wound healing and infection prevention. Surgeries involving the head, neck, esophagus, stomach, or intestines can affect eating and digestion.

• Immunotherapy: Side effects vary but often include fatigue, fever, nausea, vomiting, and diarrhea.

• Stem Cell Transplant: This procedure demands special nutrition care due to side effects like mouth sores and diarrhea and increased infection risks, requiring safe food handling practices.

• Malnutrition in Cancer Patients: Cancer and its treatment can alter taste, smell, appetite, and the ability to absorb nutrients, leading to malnutrition. Malnutrition can cause weakness, fatigue, reduced infection resistance, and hinder treatment completion, thus lowering the quality of life and potentially becoming life-threatening.

• Anorexia and Cachexia: Anorexia, the loss of appetite, is common in cancer patients and can occur at any disease stage. Cachexia involves severe weight and muscle loss due to metabolic changes and is often seen in advanced cancer cases. Both conditions contribute significantly to malnutrition and can coexist, making nutritional management more challenging.

What Are Different Types of Nutrition Support for Cancer Patients?

Nutritional supplementation usually benefits people who cannot consume or digest meals.

Different approaches can be used to provide nutrition support.

Enteral Nutrition: Also known as tube feeding, it supplies liquid nourishment into the stomach or intestines via a tube.

Types of feeding tubes include:

• Nasogastric Tube: It is inserted through the nose into the stomach or small intestine for short-term use.

• Gastrostomy or Jejunostomy Tube: It is inserted through the abdomen into the stomach or small intestine for long-term use.

Parenteral Nutrition: The bloodstream is immediately supplied with nutrients via a catheter in a vein in the chest or arm.

Types include:

• Peripheral Venous Catheter: Inserted into an arm vein for short-term feeding.
• Central Venous Catheter: Inserted into a large chest vein for long-term feeding.

What Are the Benefits of Maintaining Good Nutrition During Cancer Treatment?

• Ensuring adequate nutrition is crucial for individuals undergoing cancer treatment, as both the illness and therapies can significantly impact dietary habits and nutrient absorption.

• Maintaining good nutrition during cancer treatment is crucial for supporting overall health, strengthening the immune system, and enhancing energy levels to cope with treatment-related fatigue. Proper nutrition aids in healing, maintains muscle strength, and improves the quality of life by reducing treatment side effects and supporting digestive health. It aids in keeping a healthy weight and enhances treatment tolerance, which is crucial for effectively managing and recovering from cancer therapy.

• During cancer treatment, dietary adjustments may be necessary to maintain general health and control negative effects after therapy This could involve consuming foods not typically recommended for general health, such as high-protein, high-calorie options to maintain weight, and cold foods like ice cream to ease mouth and throat sores. Tailoring the diet based on cancer type, treatment regimen, and specific side effects is essential to meeting nutritional requirements.

• Nutritional needs vary from person to person during cancer treatment. The medical staff is essential in identifying the specific nutrition goals and devising a plan to achieve them. Eating well while undergoing treatment can enhance well-being, sustain energy levels, preserve weight, manage side effects, reduce infection risks, and expedite recovery.

How to Maintain Nutrition in Cancer Patients?

Maintaining nutrition is crucial for cancer patients and is achieved by a balanced diet. A well-balanced diet rich in lipids, carbohydrates, proteins, water, vitamins, and minerals is crucial for supporting the body’s fight against cancer.

Here is how essential nutrients contribute to the health:

• Proteins: Essential for growth, tissue repair, and immune function. Cancer patients often require increased protein intake to aid tissue healing post-surgery and combat infections. Sources include fish, poultry, lean meats, eggs, dairy, nuts, legumes, and soy products.

• Fats: Serve as energy stores, insulation, and carriers of vitamins. Opt for heart-healthy monounsaturated and polyunsaturated fats (like olive oil, nuts, and seeds) over saturated fats (found in animal products and some oils) and trans fats (mostly eliminated from the United States food supply).

• Carbohydrates: Provides energy for physical activity and organ function. Whole grains, fruits, and vegetables are optimal sources, offering vitamins, minerals, fiber, and phytonutrients that promote health.

• Water: Water is critical for cellular function and maintaining fluid balance. Adequate hydration is essential, especially if experiencing vomiting, diarrhea (loose stools), or reduced food intake. Fluids from foods and beverages like soups and milk contribute to daily hydration needs.

• Vitamins and Minerals: Support overall bodily functions and energy utilization. While a balanced diet typically provides sufficient vitamins and minerals, supplements may be recommended if dietary intake is compromised due to treatment side effects.

• Supplement Safety and Considerations: Consult the healthcare provider before taking supplements, as large doses of certain vitamins and minerals may interfere with cancer treatments. Instead of relying solely on supplements, focus on obtaining antioxidants and phytonutrients naturally from fruits, vegetables, and plant-based foods.

• Herbal and Dietary Supplements: Exercise caution with herbal products, as they can interact with cancer treatments or cause adverse effects. Discuss any supplements with the healthcare team to ensure safety and efficacy.

• Diets: Some people with cancer try special diets, hoping to improve treatment outcomes or manage side effects. However, most of these diets lack strong evidence. Vegetarian or vegan diets, macrobiotic diets, and ketogenic diets all have uncertain impacts on cancer treatment. Research suggests potential benefits of diets rich in phytochemicals for specific cancers, but more study is needed to confirm their effectiveness.

• Medication for Appetite Loss and Weight Loss: Medicine may be given alongside nutrition therapy to manage loss of appetite and weight loss. Different medications, such as Prednisone and Megestrol, may be used, sometimes in combination, for better effectiveness but with potential side effects.

Nutrition Therapy Goals for Advanced Cancer

The primary goal is to provide the best quality of life and manage distressing symptoms. Treatment plans vary for each individual, including anticancer therapy and palliative care. As care shifts to hospice or end-of-life care, nutrition therapy may become less aggressive to maximize comfort.

Treatment of Symptoms

• Anorexia: Eat high-protein, high-calorie foods. Try new recipes and blenderized drinks. Eat small, frequent meals and snacks.

• Nausea: Eat appealing, bland, and soft foods. Avoid strong smells and heavy meals. Eat small and frequent meals.

• Vomiting: Reintroduce food slowly after vomiting stops, starting with clear liquids.

• Dry Mouth: Eat easy-to-swallow foods and sip water regularly. Avoid alcohol and tobacco.

• Mouth Sores: Eat soft, bland food, and use a straw. Avoid spicy, acidic, and sharp foods.

• Taste Changes: Try poultry, fish, eggs, and cheese instead of red meat. Use spices and sauces.

• Sore Throat and Trouble Swallowing: Eat soft, moist foods. Avoid hot, spicy, acidic, and sharp foods.

• Lactose Intolerance: Use lactose-free products and try soy or rice alternatives. Eat calcium-rich vegetables.

• Weight Gain: Eat fruits, vegetables, and high-fiber foods. Choose lean meats and low-fat dairy. Exercise daily.

Conclusion:

Good nutrition during cancer treatment supports overall health, boosts energy levels, aids in recovery, and helps manage treatment side effects, enhancing quality of life and treatment outcomes. Additionally, it boosts immunity, helps with weight maintenance, and improves the body's ability to tolerate treatment, which is crucial for effectively navigating the challenges of cancer therapy.