How Diet Can Affect Cancer Risk and Recovery
August 12, 2024
Cancer affects millions of lives worldwide. Though medical advancement has done a great deal to increase the human lifespan, proper nutrition has also been proven to help in the prevention of cancer. As researchers continue their hunt for a cure, there is a lot of information out there to support the argument that nutrition is an essential component in disease prevention and management.
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Linking Diet and Cancer Risk
Evidence shows that our diets impact our vulnerability to cancer – and our ability to fight it. The American Cancer Society states that at least 18% of all cancers in the United States are related to excess body weight, physical inactivity, alcohol consumption, and/or poor nutrition. (American Cancer Society Guideline for Diet and Physical Activity | American Cancer Society). Sure, genetics can contribute, but research continues to support the belief that following a healthy diet can reduce the likelihood of developing cancer in the first place. Renown Health’s Jessica Blauenstein, MS, RDN, LDN, CSO, Registered Dietitian and Board-Certified Specialist in Oncology Nutrition confirms the importance of a nutritious diet consisting of:
- Fruits and Vegetables: Eating a variety of fruits and vegetables provides large amounts of vitamins, minerals and antioxidants. Nutrient-rich, they help in fighting off oxidative stress and inflammation, both of which are factors for developing cancer.
- Whole Grains: A diet rich in grains such as brown rice, quinoa and oats, contains substantial amounts of fiber that helps in digestion. A few studies have shown that whole grains might offer some protection against colorectal cancer.
- Lean Proteins: Reducing the amount of red and processed meats in the diet by substituting lean proteins, such as poultry, fish, beans and lentils may lower the risk of developing cancer. Red and processed meats have been associated with colorectal and other cancers when consumed in large amounts.
- Healthy Fats: Begin focusing on healthy fats from foods like avocados, nuts, seeds and olive oil. These fats are anti-inflammatory, which may play a beneficial role in disease prevention.
- Avoidance of Sugar and Processed Foods: Sugar and foods high in processed ingredients have been linked to an increased risk of obesity, type 2 diabetes and some cancers. It's important to limit the intake of sugary drinks, candy and snacks in the battle against cancer.
A Role of Nutrition in Cancer Recovery
Nutrition becomes even more critical for individuals who receive treatment and are in recovery. Treatments such as chemotherapy, radiation therapy and surgery can take a lot out of a body, affecting appetite, digestion and nutrient absorption.
Proper nutrition during and after treatment can help:
- Support Immune Function: A good, balanced diet will provide the essential nutrients that support a resilient immune system, which is important in fighting off infections and supporting overall health during cancer treatment.
- Maintain Strength and Energy Levels: Proper caloric intake, protein and micronutrients prevent muscle wasting and fatigue, allowing patients to sustain their strength and energy.
- Address Side Effects: Certain foods and diets can help reduce or alleviate some common side effects associated with cancer treatment, including nausea, vomiting and mucositis. Eating small, frequent meals, maintaining good hydration, and avoiding spicy or acidic foods can all ease treatment-related discomfort associated with the GI tract.
- Facilitate Healing and Recovery: Nutrient-rich foods promote healing and the repair of tissues that may be damaged after surgery or other medical interventions. Foods high in proteins, vitamins and minerals play a significant role in repairing and replacing damaged tissues and cells.
- Correct Nutritional Deficiencies: Cancer and its treatment cause vitamin D, vitamin B12 and iron deficiencies in the diet. Nutrition therapy through a registered dietitian or nutritionist can identify those deficiencies and help manage them through dietary changes or supplementary means.
Related information: Nourishing Your Loved One Through Cancer Treatment