ADHD is not simply a disorder of attention or behavior, but an expression of imbalance within the body’s internal environment. Factors such as nutrient deficiencies, blood sugar instability, toxin exposure, chronic stress, and gut health imbalances can all influence brain function and nervous system regulation. When the terrain is disrupted, it can affect focus, impulse control, emotional regulation, and energy levels. Rather than viewing the brain in isolation, terrain medicine looks at supporting the whole body by stabilizing nutrition, supporting the gut and detoxification pathways, calming the nervous system, and creating consistent daily rhythms. As the internal environment becomes more balanced, the brain is better able to function with clarity, focus, and regulation.