ADHD is a common neurodevelopmental condition that impacts attention, behavior, memory, and executive functioning. It manifests in two major forms—inattentive and hyperactive/impulsive—and can persist from childhood into adulthood. Functional medicine approaches ADHD by exploring root causes that may exacerbate symptoms, such as food sensitivities, nutrient deficiencies, gut-brain axis disruption, chronic inflammation, and environmental toxins. By optimizing brain chemistry, supporting neurotransmitter function, and improving lifestyle factors, many patients experience noticeable improvements in focus, mood, and behavior—often without long-term reliance on stimulant medications.