Study: Reishi Beta-Glucans Modulate Immune Function in Healthy Adults—not just in lab dishes or animal models.
Study Design
This gold-standard study design gave healthy adult volunteers either Reishi-derived beta-glucans or a placebo, with neither participants nor researchers knowing who received which (double-blind). Researchers then measured immune cell activity through blood tests.
Key Findings
The group taking Reishi beta-glucans showed measurable changes in immune cell activity compared to the placebo group. Importantly, this immune modulation occurred even in healthy people without disease present.
What Immune Modulation Means
“Immune modulation” doesn’t simply mean boosting the immune system. It means helping immune function respond appropriately—neither overreacting (which causes autoimmune issues) nor underreacting (which leaves you vulnerable to infection). Beta-glucans appear to help calibrate this response.
The Extraction Factor
Beta-glucans are water-soluble polysaccharides. This means they require hot water extraction to obtain—alcohol extraction alone would miss these immune-modulating compounds entirely.
Limitations to Consider
Individual immune responses vary significantly. The study duration was limited, and long-term effects require further research. Results in healthy adults may differ from those with compromised immune systems.
Citation
Mallard, B., et al. (2019). Evaluation of Immune Modulation by β-1,3; 1,6 D-Glucan from Ganoderma lucidum in Healthy Adult Volunteers: A Randomized Controlled Trial. PLOS ONE, 14(5), e0216933.