Hydrogen Sulfide When discussing SIBO, most conversations focus on hydrogen and methane. But there’s a third gas gaining attention in scientific research: hydrogen sulfide (H₂S). Unlike methane, hydrogen sulfide is biologically active. It doesn’t just cause odor — it interacts directly with cellular systems. And in excess, that interaction matters. 🧪 What Is Hydrogen Sulfide? Hydrogen sulfide is produced by certain gut bacteria, particularly when they break down sulfur-conta
