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Melanoma and the gut microbiome are linked. That is to say, a healthy gut microbiome is central to the melanoma patient’s therapy plan. The research below explains how a healthy gut microbiome enhances the patient’s therapy plan.
I am a long-term survivor of a different cancer. An “incurable” blood cancer. My experience has taught me that while conventional therapies are important, they are only a small piece of the treatment puzzle. Nutrition, supplementation, and lifestyle therapies should also be part of your therapy plan.
While the short video linked below talks about enhancing your gut microbiome to enhance the efficacy of immunotherapy, there is growing research that a diverse gut microbiome can also reduce side effects.
After all, chemotherapy wouldn’t be so bad if it weren’t for the short-term, long-term and late stage side effects.
Here’s how gut health affects melanoma
Below is a sample 7-day diet designed to support gut microbiome diversity and function in patients with melanoma, including those receiving or preparing for immune checkpoint inhibitor therapy. The plan emphasizes fiber diversity, polyphenols, fermented foods, and omega-3s, all of which have been associated with more favorable immune responses and gut microbial profiles in cancer populations.
Important note: This is a general educational example, not a medical prescription. Individual needs (weight loss, steroid use, colitis risk, neutropenia, food intolerances) should be reviewed with the oncology team or a registered dietitian.
Dinner: Grilled trout or sardines, barley, asparagus
Day 6
Breakfast: Smoothie with kefir, mango, oats, flaxseed
Lunch: Quinoa salad with edamame, red cabbage, sesame oil
Snack: Carrots + tahini
Dinner: Vegetable stir-fry (broccoli, peppers, mushrooms) with tofu or shrimp
Day 7
Breakfast: Whole-grain pancakes topped with berries and yogurt
Lunch: Split pea soup + mixed greens
Snack: Orange + pistachios
Dinner: Roasted chicken or chickpeas, wild rice, cauliflower
Optional Add-Ins (If Tolerated)
Green tea or matcha (daily)
Extra-virgin olive oil as main fat
Herbs & spices: turmeric, garlic, ginger, oregano
Small amounts of fermented foods (yogurt, kefir, miso, kimchi)
Special Considerations for Melanoma Patients on Immunotherapy
Avoid unnecessary probiotics unless recommended by clinicians
Monitor GI symptoms (colitis may require temporary fiber adjustment)
Hydration is critical
During flares: shift to lower-fiber, well-cooked foods temporarily
Have you been diagnosed with melanoma? What stage? What is your therapy plan? Scroll down the page, post a question or a comment, and I will reply to you ASAP.
The team’s study, published in the journal Immunity, showed that molecules produced by gut bacteria upon digestion of dietary fibre can improve the function of cancer-fighting immune cells. The research team found that these digestive by-products influence melanoma progression by naturally boosting killer T cell function in preclinical cancer models, filling important gaps in our knowledge about how the gut microbiota regulate melanoma immunity.
“Melanoma patients undergoing immunotherapy can benefit from a fibre-rich diet and previous studies suggested that what we eat affects the immune system; however, how that works wasn’t clear,” said Dr Annabell Bachem, a Senior Research Fellow at the Doherty Institute and co-first author on the paper…
Summary
Over the last decade, the composition of the gut microbiota has been found to correlate with the outcomes of cancer patients treated with immunotherapy. Accumulating evidence points to the various mechanisms by which intestinal bacteria act on distal tumors and how to harness this complex ecosystem to circumvent primary resistance to immune checkpoint inhibitors.
Here, we review the state of the microbiota field in the context of melanoma, the recent breakthroughs in defining microbial modes of action, and how to modulate the microbiota to enhance response to cancer immunotherapy. The host-microbe interaction may be deciphered by the use of “omics” technologies, and will guide patient stratification and the development of microbiota-centered interventions. Efforts needed to advance the field and current gaps of knowledge are also discussed…
Conclusions
The impact of the gut microbiota on melanoma systemic and cancer immunosurveillance is well established and will continue to have major clinical consequences. However, delineating the full functional repertoire (or metabolites) of gut, skin, urine, and intratumoral microbes, having accurate tests for gut dysbiosis, and rationally designing microbiota-centered interventions all represent significant challenges.
Building international consortia, collaborations, and large, shareable databases will accelerate research and development on these topics. Collectively, a thorough understanding of melanoma microbiota has the potential to be harnessed to benefit patients worldwide.
Melanoma and your gut microbiome Melanoma and your gut microbiome Melanoma and your gut microbiome
Leave a Comment:
2 comments
Victoria Gleason says
last month
My husband has stage 3 melanoma and is currently on immunotherapy. I understand the diet is important and we are getting better at eating the right foods, but he is taking probiotic vitamins as well. One of the above comments says to avoid unnecessary probiotics. What does that mean, and why?
While the study linked in the blog post talks about the importance of a diverse gut microbiome to enhance the efficacy of immunotherapy, it admits that it does not know which specific probiotic strains are important. I think all you can do is eat as nutritiously as you can. Good luck.
“Conclusions
The impact of the gut microbiota on melanoma systemic and cancer immunosurveillance is well established and will continue to have major clinical consequences. However, delineating the full functional repertoire (or metabolites) of gut, skin, urine, and intratumoral microbes, having accurate tests for gut dysbiosis, and rationally designing microbiota-centered interventions all represent significant challenges.”
