Archive · 11 Nov 2025
Bryan Johnson Takes Magic Mushrooms to Study Longevity Effects
Bryan Johnson, who is famous for trying to stay young forever, tried magic mushrooms.
He took a specific amount and felt very happy to be alive and less afraid of dying.
He said it made him feel like a kid exploring a new playground.
After the experience, he felt refreshed and his mind was sharper.
He discovered that taking deep breaths felt very satisfying.
At one point, he felt a strange stillness, like his heart had stopped, which surprised him because he usually pays close attention to his heartbeat.
He plans to do this once a month for three months to see if it helps him live longer.
His friend helped him during the experience and managed his social media.
Tech entrepreneur Bryan Johnson consumed a 4.67-gram dose of magic mushrooms (24.9 mg psilocybin) as part of an experiment.
Johnson reported feeling 'just so happy to be alive,' less fearful of death, and described his mind as 'nimble and curious' afterward.
He highlighted the satisfaction of taking deep breaths and experienced a surprising sensation of complete body stillness, including a perceived cessation of his heartbeat.
The experiment is part of Johnson's plan to study potential longevity effects by monitoring various biological markers over three months.
His co-founder, Kate Tolo, managed his social media during the experience and acted as a 'trip-sitter'.
- Who
- Bryan Johnson, tech entrepreneur and founder of Blueprint
- What
- Experimented with a 4.67-gram dose of magic mushrooms (24.9 mg psilocybin) to study potential longevity effects and share his personal experience.
- When
- Recently (specific date of consumption not precisely stated, but shared on X in November 2025)
- Where
- Implied to be in a controlled or personal environment, shared via social media (X)
- Why
- To explore potential longevity effects, gain new perspectives, and potentially reconcile with his feelings about death.
Supportive Reactions
Skepticism/Alternative Interpretations
Overall Experience and Impact
Supportive Reactions
Users praised Johnson's "visionary and inspiring" posts, focusing on the positive and "rejuvenated" feeling he described after his mushroom experience.
Skepticism/Alternative Interpretations
While the article mentions positive reactions, it doesn't explicitly detail any opposing viewpoints or skepticism from users. Any critical views would be speculative.
Methodology and Goals
Supportive Reactions
Supporters viewed his experiment as a novel way to explore "longevity effects" and "maximize wellbeing," aligning with his overall quest to defy aging.
Skepticism/Alternative Interpretations
The article does not present any viewpoints questioning the scientific validity or ethical implications of Johnson's chosen method for studying longevity.
- Subject
- Bryan Johnson
- Experiment
- Consumption of magic mushrooms (psilocybin)
- Dosage
- 4.67 grams of magic mushrooms / 24.9 mg of psilocybin
- Purpose
- Study potential longevity effects and explore personal experiences
- Duration of Plan
- Once a month for three months
- Monitored Markers
- DNA integrity, cellular aging, metabolism, protein levels, epigenetics, hormones, brain activity, organic acids
- Social Media Oversight
- Co-founder Kate Tolo managed accounts and acted as trip-sitter