How Stress Impacts the Microbiome, SIBO, and IMO Stress has long been recognized as a driver of imbalance in the human body, but its effects on the gut—and specifically on conditions like Small Intestinal Bacterial Overgrowth (SIBO) and Intestinal Methanogen Overgrowth (IMO)—are profound. Emerging research highlights the intricate relationship between stress, gut health, and these overgrowth conditions, revealing how the gut and brain communicate in ways that significantly influence our well-being. By understanding these mechanisms, we can develop holistic approaches to healing and achieving better gut health. The Role of Stress and the HPA Axis in Gut Health Stress triggers a cascade of physiological responses, largely mediated by the hypothalamic-pituitary-adrenal (HPA) axis. This central stress-response system regulates the release of cortisol, a hormone designed to help the body respond to stress. However, chronic stress can dysregulate this axis, leading to prolonged elevate...