
Radically Genuine Podcast with Dr. Roger McFillin 226. Awakening to Higher States of Consciousness with Dr. Mauro Zappaterra
Apr 9, 2026
Dr. Mauro Zappaterra, a Harvard-trained MD PhD who studies cerebrospinal fluid and consciousness. He describes discovering a rhythmic energy in the spine and explores cerebrospinal fluid’s role in brain health and development. He connects sleep, breathwork, pineal biology, and practices that sustain awakening. The conversation bridges anatomy, ancient wisdom, and practical methods for shifting awareness.
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Sleep Drives CSF Pulses That Clear Brain Waste
- CSF flow into brain tissue increases during sleep when neuronal and blood flow decrease, allowing clearance of metabolic toxins.
- This glymphatic-like pulsation explains why deep physiologic sleep uniquely clears brain waste compared with sedative-induced sleep.
Prefer Practices That Activate Natural CSF Flow Over Sedatives
- Avoid relying solely on sleep medications because some (e.g., Ambien) may not activate CSF-mediated brain clearance despite producing sleep.
- Use breathing, meditation, or parasympathetic practices to boost CSF flow and support natural clearance before tapering meds.
Pineal Releases Melatonin Into CSF At High Concentrations
- The pineal gland sits behind the third ventricle and releases melatonin primarily into CSF at concentrations much higher than blood.
- That positions melatonin (and possibly endogenous DMT) to modulate brain state via CSF distribution.

