Deuterium Depleted Water and Hydrogen Sulfide SIBO: Exploring the Connection with Greg Nigh, ND

16 Sept 2025 · 82 min
The Perfect Stool Understanding and Healing the Gut Microbiome

16 Sept 2025 · 82 min

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In this episode of The Perfect Stool, host Lindsey Parsons interviews naturopathic physician Dr. Greg Nigh about the role of deuterium and deuterium‑depleted water (DDW) in human physiology and gut health. Dr. Nigh explains that deuterium, a heavy isotope of hydrogen, is ubiquitous in water and food and can impair mitochondrial ATP production when incorporated into cells. He describes how the gut microbiome acts as a filter, using enzymes that avoid incorporating deuterium and trapping it in molecules such as collagen, essential fatty acids, and carotenoids, which are then excreted. The discussion moves to clinical observations: a handful of patients report improved gut symptoms, increased vitality, and dramatic cancer‑related outcomes when consuming DDW, though the therapy is costly and requires testing body deuterium levels (saliva or urine). Dr. Nigh outlines a practical DDW protocol (25 ppm and 10 ppm water, dosing schedule, supplier details) and connects deuterium‑low diets to ketogenic eating, noting that fats contain the least deuterium. The conversation then shifts to sulfur metabolism, detailing how dietary sulfur is converted to sulfate, the importance of hydrogen sulfide as a precursor, and why garlic can trigger symptoms in sensitive individuals. He presents a low‑sulfur elimination diet with stepwise reintroduction, using tools such as Epsom‑salt baths, molybdenum (Mosem Forte), and hydroxocobalamin to support sulfate production. Genetic variants (CBS, SUOX) are mentioned, with molybdenum and hydroxocobalamin addressing specific enzymatic deficits. Finally, Dr. Nigh touches on adjunctive therapies—oral peptides (BPC‑157, thymosin α‑1) and infrared light for gut inflammation—while noting the broader impact of autonomic dysregulation on treatment response.

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