A Comprehensive Look at Immunity and Supplementation, Part 2

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Innate–Adaptive Balance and BWH 85 Beta-Glucan with Functional Medicine Physician Dr. Rob Rountree: He brings a nuanced view of immunity that rejects the simple “immune boosting” dimmer-switch model and emphasizes immune regulation and readiness. He reviews innate immunity as sentinel cells using pattern recognition receptors (e.g., macrophages) and explains how innate and adaptive systems interface, with innate signaling training adaptive responses; chronic inflammatory disease is framed as rooted in innate dysregulation. He reveals how immune responses can both protect and harm (candida, cytokine storm concerns during COVID) and why test-tube “stimulation” doesn’t equal human effects. The focus is a purified brewer’s yeast (Saccharomyces cerevisiae) beta-1,3/1,6-glucan (BWH 85, 85% purity), its triple-helix structure, receptors (Dectin-1, CR3), dosing (100–500 mg), evidence for improving vaccine response in elders, and potential relevance for autoimmunity, athletes, and cancer surveillance alongside lifestyle and key nutrients like vitamins A, C, D and zinc.

Dr. Hoffman continues his conversation with functional medicine practitioner Robert Rountree, MD, medical director of Boulder Wellcare, in Boulder, Colorado, and long-time educator at the Institute for Functional Medicine.

Dr. Ross Pelton, Director of Science & Education for Essential Formulas Incorporated, maker of Dr. Ohhira’s premium probiotic products, reveals how the gut microbiome affects metabolism, appetite, weight regulation, and overall health. He emphasizes the importance of microbiome diversity, supported by eating a wide variety of plant foods rich in fiber and polyphenols, and discusses how fermented foods and postbiotic metabolites help maintain a healthy gut environment. Pelton explains Dr. Ohhira’s multi-year fermentation process and the idea that postbiotics may be key health regulators. He reviews studies suggesting benefits from Dr. Ohhira’s probiotics for athletic performance markers, reduced fatigue, and improved bowel regularity, and notes research showing antibiotic-related losses in gut diversity can persist for years. He also mentions a higher-dose “Reset Challenge,” a postbiotic paste concentrate, and an ME-3 product aimed at increasing glutathione.

Dr. Hoffman continues his conversation with Dr. Ross Pelton, Director of Science & Education for Essential Formulas Incorporated, maker of Dr. Ohhira’s premium probiotic products.

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Nutritionist Leyla Muedin answers a listener question about taking many supplements with oolong tea, explaining that tea tannins can interfere with vitamin and mineral absorption; because oolong is partially oxidized, its tannin level falls between green and black tea, so she recommends taking supplements with water and separating them from tea or coffee by at least an hour (ideally 1.5–2 hours). She then reviews research in Nature Communications from USC on how gut signals via the vagus nerve may influence which food experiences become memories: in rats, nutrient-rich foods increased acetylcholine signaling to the hippocampus, supporting memory for food location, while sweetness without calories did not. Over time, high-fat/high-sugar diets weakened this gut–hippocampus communication and memory performance, with implications for obesity, diabetes/prediabetes, and cognitive decline, and possible future vagus-nerve-based approaches.

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