Beta glucan and cancer

What is beta glucan

Beta glucan is a type of fiber that naturally occurs in the cell walls of certain plants, such as oats and barley [2]. It is a complex sugar molecule consisting of glucose molecules bound together in a specific way. Beta glucans are divided into different types depending on their structure, which affects their properties and health-related effects [1].

Metabolism of beta glucan

Beta glucan is a type of fiber that our body cannot fully break down. When we ingest beta glucan, it passes through the gastrointestinal tract largely undigested. In the large intestine, it serves as nourishment for beneficial bacteria, which contributes to a healthy gut flora (microbiota).

Benefits of beta glucan

Beta glucan works primarily by interacting with our immune system [3]. When we ingest beta glucan, it stimulates immune cells to become more active. This can strengthen the body’s defense against infections and diseases. Beta glucan is known for its immune-stimulating properties and has therefore gained attention in health research [1, 2].

Immune system

• Beta glucan activates macrophages (white blood cells that engulf waste) and natural killer cells (NK cells), which are important components of our immune defense. By strengthening the immune system, beta glucan can potentially help the body fight cancer cells more effectively [3, 4].

Gut health

• Beta glucan functions as a prebiotic, meaning it nourishes the beneficial bacteria in our gut. This can improve intestinal function and support a healthy immune system.

Cholesterol

• Some studies suggest that beta glucan can help lower “bad” LDL cholesterol and triglycerides while increasing “good” HDL cholesterol.

Stabilizing blood sugar

• By slowing the absorption of sugar into the blood, beta glucan can help regulate blood sugar and prevent spikes after meals.

Satiety

• Beta glucan can contribute to a feeling of fullness, which can be useful when weight loss is desired.

Reduction of inflammation

• Beta glucan can help reduce inflammation, a process involved in many diseases, including cancer [2].

Improving quality of life

• Some studies suggest that beta glucan can improve the quality of life for cancer patients by reducing the side effects of chemotherapy and radiation therapy [5].

Disadvantages of beta glucan

Beta glucan is generally considered safe and has few side effects.

Gastrointestinal issues

• Some people may experience gastrointestinal problems such as bloating or gas after ingesting beta glucan.

Interaction with medication

• There is limited research on how beta glucan may interact with medication. It is therefore important to talk to a competent advisor before starting beta glucan supplements.

Sources of beta glucan

Oats, barley, yeast, and certain mushrooms are good sources of beta glucan.

• Oatmeal: Both whole oats and oat products like porridge and oat flour are rich in beta glucan.
• Wheat: Whole grain wheat, such as whole grain bread and pasta, also contains beta glucan, but in smaller amounts than oatmeal.
• Yeast: Both baker’s yeast and yeast extract are good sources.
• Mushrooms: Some types of mushrooms, such as shiitake and maitake, are rich in beta glucan.
• Barley: Barley and barley products, such as barley flour and barley grains, are also good sources.

Research

Although there are promising results from animal studies and smaller clinical trials, more research is still needed to establish the full effect of beta glucan in cancer [2, 3]. Results from clinical studies have been inconsistent, which may be due to differences in dosage, the type of beta glucan used, and the patient population.

Conclusion

Beta glucan is a natural substance with the potential to strengthen the immune system and improve the quality of life for cancer patients. Although there are promising results, more research is still needed to establish the full efficacy and safety of beta glucan as part of cancer treatment.

Beta glucan should never stand alone as a treatment for cancer. Consult your practitioner.

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Links

[1] Advancing β-Glucan-Based Immunomodulation and Cancer Treatment (Sage Journals, 2025)

• Content: A review article discussing the advancement of β-glucan-based immunomodulation. It highlights the ability of these polysaccharides to enhance the body’s immune surveillance and promote the activation of immune cells in the context of cancer treatment.

[2] β-glucan, a potent adjuvant in immunotherapy for digestive tract tumors (PubMed, 2024)

• Content: A scientific article detailing how β-glucan acts as an immunomodulatory agent. Based on preclinical studies, it shows promising anti-tumor efficacy, particularly in colorectal and pancreatic cancer.

[3] Potential promising anticancer applications of β-glucans: a review (Portland Press, 2022)

• Content: A review discussing the potential of β-glucans to improve tumor surveillance. It examines how activating the immune system can aid in the elimination of cancerous cells through targeted immune responses.

[4] Innate Immune Training of Granulopoiesis Promotes Anti-tumor Activity (PubMed, 2020)

• Content: A foundational study describing how beta glucans can reprogram the production of white blood cells in the bone marrow to create a more effective anti-tumor immune response.

[5] Potential benefit of β-glucans as adjuvant therapy in immunotherapy (PubMed Central, 2021)

• Content: A scientific article analyzing how β-glucans can stimulate both innate and adaptive immune responses, promote apoptosis (cell death) in cancer cells, and inhibit their proliferation.

[6] Beta-glucan| A must-eat immune strengthener for tumor- and cancer patients(Nanjing Tessin, 2022) (Danish Language)

Page created: Aug. 14, 2024. Latest revision: April 23, 2026.

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What you read on I Have Cancer is not a recommendation. Seek competent guidance.