Building Your Cancer Support Team: Nutrition, Wellbeing and Complementary Care Alongside Your Treatment
A cancer diagnosis can make it feel as though your life has been handed over to scans, appointments and treatment schedules. You may have questions your medical appointments never seem to have time for: What should I eat? How do I cope with the fear? Is there anything else I can do to help myself? Those questions matter, and the good news is that you don't have to answer them alone.

Your Oncologist Leads, but Doesn't Have to Do It All
Your oncologist is the expert on your cancer and its treatment. That expertise is irreplaceable. But no single person can cover every part of what you're going through, and that isn't a criticism of doctors. It's simply how medicine works.
Take nutrition. Surveys of medical schools have found that many doctors receive only limited formal nutrition training during their degree, often fewer hours than recommended. So if your questions about food feel under-answered, that may be why. The answer isn't to go around your doctor. It's to add the right people to your team.
Many cancer centres already offer this kind of wider support. Depending on where you live, it may include oncology dietitians, psychologists and counsellors, physiotherapists, social workers and, increasingly, integrative oncology services. Integrative oncology means using evidence-based complementary approaches alongside standard cancer treatment, not instead of it.
Nutrition: Ask for an Oncology Dietitian
Eating well during treatment can be genuinely hard. Nausea, taste changes, mouth sores, fatigue and loss of appetite all get in the way. An oncology dietitian is trained specifically to help with this. They can look at your individual situation and help you build a realistic eating plan that works around your symptoms and your treatment.
You may have read about specific diets for cancer, such as ketogenic or very low-carbohydrate plans. Research into how diet interacts with cancer is real and ongoing, but the evidence is still mixed and depends heavily on the type of cancer and the treatment. Restrictive diets can also make it harder to keep your weight and strength up, which matters a great deal during treatment. If a particular diet interests you, that's a great question to take to a dietitian who knows your case.
Your Mind Matters Too
Cancer affects much more than your body. It can shake your sleep, your relationships, your work, your finances and your sense of the future. Looking after your emotional wellbeing isn't a luxury. It's part of getting through treatment.
This is one area where the evidence for complementary approaches is encouraging. Guidelines from the Society for Integrative Oncology and the American Society of Clinical Oncology support practices such as mindfulness, yoga and relaxation techniques for helping with anxiety and low mood in people with cancer. Similar guidance supports acupuncture and massage for some types of cancer-related pain. These approaches don't treat the cancer itself, but they can make a real difference to how you feel day to day.
Counselling, support groups and simply making space for rest, nature and the people you love all count too. Ask your cancer centre what psychological support is available. Many offer it free.
A Word of Care About Supplements and "Natural Cures"
It's natural to want to do everything you can, and many people with cancer consider supplements, herbs or remedies they've read about online. Here's what's important to know.
Some supplements can interfere with cancer treatment. Certain herbs change how the body processes chemotherapy drugs, which can make treatment less effective or increase side effects. St John's wort is a well-known example. High doses of some antioxidants are also debated during chemotherapy and radiotherapy. That's why the single most useful step you can take is to tell your oncology team about everything you're taking, including vitamins, herbs and teas.
Tell your oncology team about every supplement, herb and remedy you're taking or considering. Some can interact with cancer treatment, and your team can only keep you safe if they have the full picture.
Be cautious about anything promoted as a natural cure for cancer. Some remedies, such as Essiac tea, have been popular for decades, yet controlled studies haven't shown that they work against cancer. And the stakes are high. Research has found that people who chose alternative medicine instead of conventional treatment had a significantly higher risk of death. Complementary care works best as a companion to your treatment, never a replacement.
Becoming Your Own Advocate
Being an active part of your own care doesn't mean doing it alone or distrusting your doctors. It means understanding your situation well enough to take part in the decisions. You have every right to ask questions like: Why is this treatment recommended? What are the benefits and risks? Are there other options? What support is available for my nutrition and wellbeing?
It can help to bring a list of questions to appointments, take someone with you, and ask for a second opinion if you want one. A good care team, whether conventional or complementary, will explain their reasoning, be honest about the limits of their expertise and be happy to work alongside your other providers.
Cancer can make you feel powerless, but you're not a passenger in your own care. Your oncologist leads the treatment, and around them you can build a team that looks after the rest of you: your nutrition, your mind, your energy and your everyday life. Ask questions, look for people who are willing to work together, and remember that you deserve support for the whole of you, not just the diagnosis.
- Carlson, L.E. et al., 2023. Integrative Oncology Care of Symptoms of Anxiety and Depression in Adults With Cancer: Society for Integrative Oncology–ASCO Guideline. Journal of Clinical Oncology, 41(28), 4562–4591.
- Mao, J.J. et al., 2022. Integrative Medicine for Pain Management in Oncology: Society for Integrative Oncology–ASCO Guideline. Journal of Clinical Oncology, 40(34), 3998–4024.
- Lyman, G.H. et al., 2018. Integrative Therapies During and After Breast Cancer Treatment: ASCO Endorsement of the SIO Clinical Practice Guideline. Journal of Clinical Oncology, 36(25), 2647–2655.
- Johnson, S.B. et al., 2018. Use of Alternative Medicine for Cancer and Its Impact on Survival. Journal of the National Cancer Institute, 110(1), 121–124.
- Adams, K.M. et al., 2010. Nutrition Education in U.S. Medical Schools: Latest Update of a National Survey. Academic Medicine, 85(9), 1537–1542.
- National Cancer Institute, PDQ. Essiac/Flor Essence (PDQ), Health Professional Version. Available at: https://www.cancer.gov
This article is intended for informational and educational purposes only and is not medical advice. Complementary approaches should support, never replace, the cancer treatment agreed with your oncology team. Always tell your oncology team about any supplement, herb or remedy you are taking or considering before making changes to your care.