Fiber2026-05

Leveraging Dietary Interventions to Benefit Patients with Hematologic Malignancies and Clonal Hematopoiesis.

Brzechffa Camille, Fleischman Angela G — Nutrients

Summary

This review explores how diet can support patients with blood cancers and related conditions. It highlights that what we eat can influence inflammation, gut health, and metabolism, which are all relevant to these diseases. Specific dietary approaches, such as anti-inflammatory or high-fiber diets, are being investigated as potential ways to improve patient outcomes and complement existing treatments.

AI-generated summary — read the original

Key points

Dietary choices can influence inflammation, immune function, and gut health, all relevant to blood cancers.
Anti-inflammatory diets, such as the Mediterranean diet, may help reduce inflammation.
High-fiber and plant-based diets show promise in restoring healthy gut bacteria, especially after chemotherapy.
Dietary interventions are being explored as supportive care to improve outcomes for patients with blood cancers.

What the study looked at

This review paper investigated the scientific basis and current clinical evidence for using dietary changes to help patients with blood cancers and related pre-cancerous conditions. Researchers analyzed existing studies, including laboratory findings and early human trials, to understand how diet impacts the body's systems relevant to these diseases. The review found that diet can influence key factors like inflammation, immune system activity, gut bacteria, and how cancer cells use energy. For example, anti-inflammatory diets, like the Mediterranean diet, may reduce inflammation that can fuel disease progression. High-fiber and plant-based diets show promise in restoring healthy gut bacteria, especially after chemotherapy, which can disrupt it. Addressing obesity through calorie-controlled or plant-focused diets is also relevant, as obesity is a risk factor. While early studies are encouraging, the paper concludes that larger, more rigorous trials are needed to confirm these benefits and establish diet as a standard therapeutic tool.

Dietary takeaway

While more research is needed, this review suggests that a diet rich in fiber, found in fruits, vegetables, and whole grains, could be beneficial for maintaining a healthy gut, especially for individuals undergoing treatments that affect gut bacteria. Incorporating these foods into your daily meals may offer supportive benefits, but always discuss significant dietary changes with your healthcare team, as one study is not definitive.

Abstract

Diet is a modifiable factor that influences multiple pathways relevant to hematologic malignancy, including systemic inflammation, immune cell activity, gut microbiota composition, and cancer cell metabolism. Translation of preclinical findings into clinical practice for hematologic malignancies remains nascent, although momentum is building to evaluate dietary interventions as a component of supportive and disease-modifying care. This review examines the mechanistic rationale for dietary interventions across the spectrum of clonal hematologic disorders and synthesizes current clinical evidence. Anti-inflammatory dietary patterns, particularly the Mediterranean diet, have demonstrated reductions in pro-inflammatory cytokines and may attenuate the inflammatory milieu that fuels clonal expansion. Obesity, which elevates the risk of developing hematologic malignancies and worsens clinical outcomes in diseases such as acute lymphoblastic leukemia (ALL) and acute myeloid leukemia, may be addressed through calorie-restricted, low-fat, or plant-based dietary strategies. Gut microbiota dysbiosis induced by chemotherapy represents another target, with high-fiber and plant-based diets showing promise in restoring microbial diversity and potentially enhancing treatment efficacy. Early-phase clinical trials in multiple myeloma, acute lymphoblastic leukemia, and myeloproliferative neoplasms have established feasibility and yielded preliminary signals warranting larger confirmatory studies. Larger, rigorously designed trials are needed to establish dietary interventions as legitimate therapeutic tools in the management of hematologic malignancies.

View on PubMed →DOI: 10.3390/nu18101562