Plant-based whole-food diets are feasible during auto-HCT and are associated with dose-dependent microbiome modulation.
Ueland K, Elahi T, Rasmussen M, Wolfe AE, Purcell H
Gut Microbiome
Every high-fiber meal you eat from your garden — the beans, the kale, the winter squash — actively feeds gut bacteria that produce compounds linked to better immune resilience, and this trial shows that effect is dose-dependent: more plants, more benefit.
Researchers gave patients undergoing intense cancer treatment fresh, plant-heavy meals for five weeks and tracked what happened to the tiny organisms living in their guts. The more plant meals patients ate, the more their gut bacteria shifted toward helpful species that make beneficial compounds from fiber. By the end of the study, levels of those beneficial compounds had risen compared to the start, suggesting the plants were genuinely changing how gut microbes worked.
Key Findings
All 22 participants consumed some study meals, confirming the intervention was feasible even during intensive cancer treatment including chemotherapy and stem cell transplant.
Greater plant-meal consumption correlated with stronger shifts in gut microbial communities, including enrichment of fiber-fermenting, short-chain fatty acid–producing bacteria.
Stool concentrations of short-chain fatty acids (beneficial microbial metabolites) increased from baseline to end of the 5-week intervention, indicating a functional dietary impact.
chevron_right Technical Summary
A clinical trial found that delivering fresh plant-based meals to cancer patients during stem cell transplants was practical and safe, and eating more of those meals led to measurable improvements in gut bacteria health and beneficial metabolite production.
Abstract Preview
Plant-based whole foods may represent a tractable approach to mitigating microbiome disruption and improving outcomes in patients undergoing auto-HCT for multiple myeloma, a population in whom inte...
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