Summary
Dave Asprey sits down with Dr. David Perlmutter, a board-certified neurologist and six-time New York Times bestselling author, to explore how the brain's immune cells — microglia — shift between protective and destructive states based on mitochondrial function. They explain why neurodegeneration, mood instability, and impulsive behavior trace back to metabolic dysfunction inside these immune cells, and how inflammation locks the brain into amygdala-driven survival mode by cutting off prefrontal cortex access.
The conversation covers practical interventions for restoring microglial health, including red and infrared light therapy, 40 Hz light and sound stimulation, hyperbaric oxygen, fasting, ketosis, and targeted compounds like lithium orotate, nicotine, urolithin A, and CoQ10. They also discuss GLP-1 agonists and their surprising effects on Parkinson's progression and behavioral cravings, the role of gut-derived short-chain fatty acids (butyrate vs. propionate) in brain signaling, and why environmental toxins like mold and paraquat accelerate microglial damage.
Key Points
- Microglia shift between supportive (M2) and destructive (M1) states depending on mitochondrial metabolism — restoring mitochondrial function can reverse the shift
- Inflammation from dysfunctional microglia blocks prefrontal cortex access, locking behavior into impulsive, amygdala-driven patterns
- GLP-1 agonists showed arrest of Parkinson's progression in a 2024 New England Journal study by modifying microglial metabolism
- Red and infrared light therapy, 40 Hz light and sound, and hyperbaric oxygen can help shift microglia back to supportive states
- Gut-derived short-chain fatty acids (butyrate vs. propionate) influence brain immune signaling and neuroinflammation
- Environmental toxins including mold and industrial chemicals directly damage mitochondria and trigger sustained microglial activation
- Key compounds discussed: lithium orotate, nicotine, urolithin A, CoQ10, rosmarinic acid, and dihydromyricetin for neuroprotection
Key Moments
Infrared light on mouse brains showed special effects on microglia and brain function
Asprey and Perlmutter discuss how infrared light showed special effects on mouse brains, with implications for keeping microglia supportive of brain health rather than destructive.
"How in the heck can we keep them loving and supportive of our brain? There was a study of infrared light on mice's brains that said it was doing something special. Using You're listening to The Human Upgrade with Dave Asprey."
Early biohacker built handmade infrared emitters and reported profound brain changes
Before the biohacking movement, Asprey found a man on Yahoo Groups who built high-powered infrared emitters and used them on his own brain with reported profound cognitive improvements. Asprey bought one and used it for years.
"My brain isn't working very well. And I saw the mouse research. So I built this thing and I used it down the cerebellar vermis and on a couple other parts of the brain. And I've had profound changes in my brain function."
