Bryan Johnson: I Just Took the Most Powerful Dose of DMT in the World... Here's What It Was Like
Bryan Johnson discusses his groundbreaking experience taking 5-MeO-DMT, one of the most potent psychedelics known, as part of his comprehensive longevity protocol and documents the profound neurobiological changes using advanced brain imaging. The episode explores how psychedelics like psilocybin and 5-MeO-DMT may function as longevity therapies by dissolving the brain's default mode network and inducing neuroplasticity, while also addressing the philosophical and practical risks of radical consciousness restructuring.
Key takeaways
- • 5-MeO-DMT (9mg intramuscular + 18mg vaporized) produced what Johnson describes as the most profound human experience possible, characterized by ego dissolution, dissolution of the default mode network, and a subsequent return to childlike psychological patterns including spontaneous dream laughter.
- • Johnson's psilocybin protocol (three doses of 25mg) showed measurable brain rejuvenation on MRI, neuroplasticity changes via Kernel brain interface, and a metabolic reset that improved his blood glucose from the 99.5th to 99.9th percentile of the population.
- • Psychedelics work by scrambling rigid neural traffic patterns (similar to repositioning airports on a globe), which reduces rumination and pattern-based thinking while enabling new neural connections that underpin behavioral and psychological transformation.
- • The default mode network—the brain system that constructs ego, self-talk, and rumination—becomes increasingly rigid with age; psychedelics temporarily dissolve it, restoring the cognitive flexibility and openness characteristic of children.
- • Johnson plans to pursue emerging longevity therapies including mitochondrial augmentation therapy (using young mitochondria from family members), organoid testing platforms (creating Brian Johnson heart, liver, and lung tissue to test compounds), and gene therapy approaches like Fox3 expression for tissue regeneration.
- • Psychedelics present significant tail risks including potential permanent psychosis, personality shifts that may alter relationships or career priorities, and the philosophical question of personal identity persistence—yet Johnson argues these risks are manageable with proper medical supervision, set, and setting.
- • While traditional longevity interventions like exercise, nutrition, and rapamycin address lifespan, psychedelics uniquely target psychological youthfulness and neuroplasticity, potentially complementing rather than replacing other therapies.
Recommendations (6)
"We did the world's most quantified experiment doing psilocybin three doses at 25 milligrams and we found that we think it's a longevity therapy."
Bryan Johnson · ▶ 1:51
Mentioned (1)
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