In this episode of What Happens in Vagus, Dr. Stephanie Canestraro sits down with Dr. Kendal Stewart, a board-certified neurotologist who made the remarkable transition from neurosurgery to functional medicine. Together, they unpack how understanding root causes, not just symptoms, can transform patient outcomes. Dr. Stewart dives deep into the lasting neurological effects of COVID, explaining how inflammation and immune activation can alter the brain and body. The two explore the critical connection between genetics, immune response, and hormonal balance, especially when it comes to mast cell activation in women.

Listeners will also learn why turning off inflammation is key to recovery, how insulin resistance quietly impacts overall health, and the promising role of peptides and exosomes in immune and neurological repair. Dr. Stewart shares how personalized medicine, nutrigenomics, and genetic testing allow practitioners to tailor treatments that target inflammation, neurotransmitter imbalances, and gut dysfunction at their source. This conversation is a must-listen for anyone interested in the intersection of genetics, functional medicine, and cutting-edge approaches to healing from the inside out.

More on Dr. Stewart: As a board-certified neurotologist with advanced training in both surgery and cellular science, Dr. Kendal Stewart has dedicated his life’s work to uncovering root causes and tailoring individualized solutions through genetic testing, functional medicine, and integrative care. His approach emphasizes prevention as much as treatment, using lifestyle, nutrition, and nervous system support as daily fuel for better brain function. A nationally recognized expert in neuroimmune disorders— including genetic abnormalities, chronic pain, ADD/ADHD and autism spectrum conditions, he provides practical tools to regulate stress, stabilize energy, boost mental clarity, and gain overall wellness. Dr. Stewart brings not only clinical authority but also an empowering, real-world lens—helping families, patients, and professionals better understand and improve the nervous system and immune function.

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Keywords: functional medicine, neurotology, inflammation, genetics, immune system, COVID-19, mast cell activation, insulin resistance, peptides, neurotransmitters, personalized medicine, plasmapheresis, exosomes, gut health, nutrition

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