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Weekly · Sunday Morning

Five longevity claims.
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Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

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So I Tried Ketamine… | Bryan Johnson Podcast — Whalespan

Content›Video›So I Tried Ketamine… | Bryan…

So I Tried Ketamine… | Bryan Johnson Podcast

Bryan Johnson50m · 2025-10-08

Claims Made

90

Claims Supported

63

Support Rate

70%

Support rate

63 of 90 claims supported

63 supported27 partial / not

Claims from this content

71

✓Well SupportedPsychedelics may prolong health and lifespan by improving mental well-being and rewiring the brain to a more positive, creative, and curious state.✓Well SupportedKetamine shows promise for treating PTSD and depression.◐Partially SupportedClassical psychedelics primarily act on the serotonin 2a receptor, while ketamine acts on the NMDA receptor.✓Well SupportedAbrupt cessation of alcohol in severely dependent individuals can be physiologically deadly.◐Partially Supported

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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

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Ketamine infusions in patients with depression and PTSD were associated with reductions in epigenetic age markers.

◐Partially SupportedNaloxone nasal spray can save a life in case of overdose and should be kept on hand by anyone using street drugs or their friends.

◐Partially SupportedNew brain activity patterns can form within 1 to 3 days following ketamine administration, creating a therapeutic window for new pattern creation.

◐Partially SupportedThe effects of ketamine treatment on the brain, including the time to return to normal, were studied before, during, and after treatment.

✓Well SupportedNarcan is harmless and should be administered for suspected fentanyl-related overdose or poisoning.

✕Not SupportedSevere physical consequences of ketamine addiction can include bladder toxicity requiring cystectomy and a colostomy bag.

✓Well SupportedFentanyl contamination in recreational drugs like cocaine has increased overdose deaths.

◐Partially SupportedThe Kernel Flow device uses time-domain functional near-infrared spectroscopy to measure brain activity by mapping light interactions.

◐Partially SupportedKetamine has a higher abuse potential and is more psychologically addictive than classical psychedelics like DMT, LSD, and psilocybin.

✕Not SupportedRegular heavy cocaine use increases the risk of death by 4 to 8 times compared to non-users, reducing life expectancy by 20-40%.

◐Partially SupportedA study involving 20 patients with depression who received six ketamine infusions showed a significant reduction in depression symptoms.

◐Partially SupportedFentanyl poisoning is the leading cause of death for people aged 18 to 45 in the US.

◐Partially SupportedNaloxone acts only on opioid receptors and will not cause other issues, making it a low-risk intervention for opioid overdose.

✓Well SupportedKetamine infusions in patients with depression led to a reduction in epigenetic age.

◐Partially SupportedRepeated use of classical psychedelics within a short period causes serotonin receptors to temporarily stop working.

✕Not SupportedCocaine is not a longevity therapy and will dramatically shorten one's life.

◐Partially SupportedCombining ketamine with BCI in mice resulted in stronger neural connections and antidepressant-like behaviors lasting 8 weeks.

◐Partially SupportedPsychedelic-assisted therapy should focus on the therapeutic window that opens after the psychedelic experience.

◐Partially SupportedKetamine administration can alter cognitive frameworks, leading to novel problem-solving approaches.

◐Partially SupportedIt is difficult to establish causality between ketamine and reduced biological age due to small sample size and lack of complete control in the study.

✓Well SupportedPhysiological dependency in patients treated with ketamine for indications like recalcitrant depression is very low.

◐Partially SupportedKetamine has a biological effect known as 'K-Holes'.

◐Partially SupportedKetamine administration temporarily disrupts and then normalizes neural communication networks by scrambling brain patterns.

◐Partially SupportedKetamine was first used in a medical setting for anesthesia in the 1960s, particularly for patients who could not tolerate typical anesthetics.

◐Partially SupportedA high-fidelity wearable brain interface was developed to capture the real-time effects of ketamine and other psychedelics on brain activity.

◐Partially SupportedA 'don't die kit' should be available for safety when using substances like ketamine.

◐Partially SupportedKetamine is considered extremely safe for therapeutic indications at the discussed level of use.

◐Partially SupportedThe therapeutic window following ketamine use presents an opportunity to adapt to new patterns of thought and behavior.

◐Partially SupportedThe duration of a psychedelic experience is correlated with the duration of its therapeutic window.

◐Partially SupportedKetamine may have bladder-related issues, though this is exaggerated by pop culture.

◐Partially SupportedKetamine used as an anesthetic in hospitals typically results in unconsciousness and may be administered with other drugs.

◐Partially SupportedThere is an opportunity to study systemic changes, such as inflammation and methylation markers, in response to psychedelics.

◐Partially SupportedPsychedelic studies often rely on subjective surveys or fMRI scans because direct biochemical changes are difficult to measure.

◐Partially SupportedMeasuring the effects of interventions like ketamine is challenging due to difficulties in quantifying brain-specific changes and neurochemical pathways.

◐Partially SupportedKetamine provides a therapeutic window of a few days, while longer-acting psychedelics like Ibogaine offer windows of months.

◐Partially SupportedPsychedelics have the potential to offer benefits for improved health.

✕Not SupportedStimulants like cocaine and methamphetamine activate the cardiovascular system, increase blood pressure, and elevate sympathetic tone, leading to high blood pressure, cardiovascular disease, stroke, and dementia with regular use.

◐Partially SupportedNaloxone nasal spray available to the public is the same strength and type as that administered in an emergency room.

✕Not SupportedCocaine is an independent risk factor for cardiovascular disease and promotes plaque formation in arteries.

◐Partially SupportedFentanyl is approximately 100 times stronger than other standard drugs per gram, and a small amount can be lethal.

◐Partially SupportedIndividuals should have a protocol for preventing harm when taking drugs, including having naloxone on hand.

◐Partially SupportedNaloxone is being made more available in the community to prevent deaths.

◐Partially SupportedComprehensive measurement of an intervention's effects can include wearable data, mitochondrial function, and methylation changes.

◐Partially SupportedBryan Johnson exhibited altered behavior for several days after ketamine administration, indicating a change in openness and reduced feeling of being trapped.

◐Partially SupportedPsychedelic medicines like ketamine can treat depression and PTSD by opening new neural pathways.

◐Partially SupportedCombining ketamine with BCI is a potential future clinical application for prolonging therapeutic effects.

◐Partially SupportedKetamine is used as an anesthetic for short procedures in emergency departments and pediatric units due to its safety profile.

◐Partially SupportedA can of beer can be an effective method to prevent alcohol withdrawal symptoms in certain patients.

◐Partially SupportedAdminister naloxone immediately to an unresponsive person while calling for an ambulance and performing other life-saving measures.

◐Partially SupportedThe brain's plasticity decreases after a certain period following a psychedelic experience, making it harder to form new neural connections.

◐Partially SupportedA single pill can contain enough fentanyl that naloxone may not be sufficient to prevent an overdose.

✕Not SupportedCocaine is not kept at the Blueprint Clinic for emergency use.

◐Partially SupportedLearning a new skill during an open plasticity window created by ketamine with BCI could be measurable and beneficial.

◐Partially SupportedIbogaine, lasting about 72 hours, has shown remission rates up to 85-90% for PTSD and brain injury in veterans, significantly higher than SSRI plus therapy for PTSD (around 30%).

◐Partially SupportedPsilocybin might be a more appropriate substance to consider for an emergency kit than cocaine.

◐Partially SupportedKetamine is a safe drug when used appropriately and has a low risk of severe side effects.

◐Partially SupportedCocaine can be used in small amounts in an emergency department setting to stop severe nosebleeds.

◐Partially SupportedKetamine can be administered at psycholytic doses for psychedelic-assisted therapy, allowing for conversation with a therapist.

◐Partially SupportedA protocol will be designed to test and quantify the effects of ketamine and measure plasticity through learned behavior.

◐Partially SupportedFentanyl test strips can be purchased online and used to detect fentanyl in street drugs.

◐Partially SupportedKetamine has shown benefits for PTSD, depression, anxiety, and chronic pain.

◐Partially SupportedKetamine is used as an anesthetic in medicine.

◐Partially SupportedFentanyl poisoning is a significant cause of death for young adults, impacting lifespan more than age-related diseases.

◐Partially SupportedA therapeutic window exists after psychedelic experiences for managing life issues or undergoing therapy.

◐Partially SupportedA 'don't die drug kit' containing fentanyl test strips and nasal spray can mitigate risks from accidental exposure to dangerous substances.

◐Partially SupportedPsychedelics can help with mental health issues.

◐Partially SupportedPsychedelics can act as a catalyst for behavior change, providing motivation and energy to overcome inertia and achieve personal growth or address health issues.