In this episode, Dr. Robert Groysman breaks down why brain fog in Long COVID is not psychological, it is a measurable biological problem with multiple distinct causes. He covers dysautonomia's effect on cerebral blood flow, mitochondrial dysfunction and why the brain is uniquely vulnerable to energy deficits, neuroinflammation from overactive microglia, endothelial dysfunction and microclots impairing oxygen delivery, hormone disruption across thyroid, adrenal, and sex hormone systems, sleep architecture loss, gut-brain axis dysregulation through the vagus nerve, and post-exertional cognitive crashes.

What You'll Learn:

• Why the brain uses 20% of your body's total energy and what happens when ATP production drops
• How dysautonomia causes cerebral blood flow to fluctuate with posture, activity, and even eating
• Why your MRI can look completely normal while neuroinflammation is still actively impairing cognition
• How the gut communicates with the brain through the vagus nerve, and why gut dysbiosis worsens mental clarity
• The post-exertional pattern: why cognitive crashes can appear hours after the triggering activity
• Why identifying which specific mechanism is driving your brain fog is the key to addressing it

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