5 February 2026 Punjab Khabarnama Bureau : Nutrition plays a critical role during cancer treatment, yet it remains one of the most misunderstood aspects of cancer care. A leading oncologist has addressed several common food myths surrounding cancer, stressing that misinformation can do more harm than good for patients already battling a physically and emotionally demanding disease.
According to the doctor, many cancer patients and caregivers fall prey to restrictive diets or unverified “anti-cancer” food claims circulating on social media and messaging platforms. While the intention is often to support recovery, such myths can lead to malnutrition, weakness, and poorer treatment outcomes.
One of the most widespread myths is that sugar “feeds cancer” and should be completely eliminated from the diet. The doctor clarified that while cancer cells use glucose like all cells in the body, cutting out sugar entirely does not starve cancer. Instead, it can deprive patients of much-needed energy, especially during chemotherapy or radiation therapy, when calorie needs are often higher.
Another common misconception is that protein should be avoided during cancer treatment. Some believe protein encourages tumour growth, but medical evidence shows the opposite. Protein is essential for maintaining muscle mass, supporting immunity, and repairing tissues damaged by treatment. Patients who do not consume enough protein are at higher risk of infections, fatigue, and delayed recovery.
The doctor also addressed the myth that a strict vegetarian or “alkaline” diet can cure cancer. While plant-based foods are important for overall health, there is no scientific evidence that any specific diet can cure cancer on its own. Cancer treatment requires a comprehensive medical approach, including surgery, chemotherapy, radiation, immunotherapy, or a combination of these.
Another harmful belief is that patients should avoid fats completely. In reality, healthy fats from sources such as nuts, seeds, vegetable oils, and dairy products are crucial for meeting calorie requirements, especially for patients experiencing weight loss or poor appetite. Fats also help in the absorption of fat-soluble vitamins.
The doctor warned against extreme detox diets and juice cleanses, which are often promoted as ways to “flush out toxins.” Such diets can be dangerous for cancer patients, leading to electrolyte imbalances, dehydration, and inadequate nutrient intake. The body’s liver and kidneys already perform detoxification, and there is no medical need for special cleanses.
Spices and herbs were another area of confusion. While some herbs and supplements are marketed as cancer-fighting remedies, the doctor cautioned that many can interfere with cancer treatments or cause side effects. Patients are advised to consult their oncologist or dietitian before taking any supplements, including herbal products.
The doctor emphasised that nutrition during cancer should be personalised. Factors such as the type of cancer, stage of disease, treatment plan, side effects, and the patient’s overall health all influence dietary needs. For example, patients with mouth sores may need soft or liquid foods, while those with nausea may benefit from small, frequent meals.
Hydration is equally important. Dehydration can worsen fatigue, constipation, and kidney function, particularly during chemotherapy. The doctor recommended regular fluid intake, adjusting for individual tolerance and medical advice.
Importantly, the doctor highlighted that food should be seen as a source of strength and comfort, not fear. Eating well can help patients tolerate treatment better, maintain weight, and improve quality of life. There is no single “perfect” cancer diet, but balanced nutrition remains the cornerstone of supportive care.
Caregivers were urged to avoid imposing unnecessary food restrictions based on myths. Emotional support, flexibility, and encouragement often help patients eat better than rigid rules. Enjoyment of food, within medical guidance, can also support mental well-being during treatment.
The doctor concluded by urging patients and families to rely on credible medical advice rather than unverified online claims. Registered dietitians trained in oncology nutrition can provide evidence-based guidance tailored to each patient’s needs.
As cancer survival rates improve, attention to nutrition as part of holistic care is becoming increasingly important. Busting food myths and replacing them with medical facts can empower patients to make informed choices and focus their energy on recovery rather than confusion.
Summary:
A doctor has debunked common cancer food myths, stressing that balanced, personalised nutrition—not restrictive or extreme diets—supports treatment tolerance, recovery, and overall well-being during cancer care.