Why do some people continue to struggle with dizziness, fatigue, brain fog, a racing heart, digestive issues, or lingering concussion symptoms even when standard tests don’t reveal a clear answer?

Dr. Molly Brown welcomes Dr. Nathan Keizer to explore what may be happening beneath these complex symptoms and how the brain and autonomic nervous system influence everything from blood flow and balance to heart rate, digestion, inflammation, and the way we respond to our environment.

Dr. Keizer explains why conditions such as dysautonomia and POTS can look very different from person to person, and why treating the symptom alone may miss the underlying problem. He shares how his team evaluates the nervous system under real-life demands like standing, moving, thinking, and exercising to identify where communication may be breaking down.

They also discuss concussion and brain injury recovery, neuroplasticity, inflammation, the connection between the brain and immune system, and why two people with nearly identical symptoms may need completely different approaches to recovery.

For anyone living with unexplained neurological symptoms—or trying to better understand how the brain affects whole-body health—this conversation offers a different way to think about what the body may be communicating and how function can begin to improve.00:00 Show Introduction00:24 Meet Dr. Nathan Keiser01:06 Autonomic System Explained03:20 Unraveling Dysautonomia05:27 Concussion To Blood Flow06:46 Testing And New Tools09:54 Two Patient Case Examples14:11 Mechanisms Over Labels16:07 Inflammation And Immunity19:22 Trauma Infection Catalysts23:29 Building The Toolbox28:09 Clinic Diagnostics Intensive32:07 Hope Through Measurable Change34:00 Athlete Performance Protocols38:40 Find The Clinic Online39:12 Training Other Clinicians40:55 Final Thanks And Outro