Audit a URL →

Sign in Sign up free

Loading…

Weekly · Sunday Morning

Five longevity claims.
Worth your time.
Every Sunday.

Last Sunday

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

5 audits·1 verdict change·0 affiliate links·Every Sunday

Joining 1,247 readers — founders, MDs, and longevity-obsessed people who fact-check their own health decisions.

Browse

Decisions Claims Content Creators

Product

Audit a URL Sunday roundup API (soon)Pricing

About

FAQ Methodology Editorial Standards Corrections Press & brand RSS feed

Legal

Terms of Service Privacy Policy DMCA

Finally, something serious in this space.
Because we actually read the papers.

© 2026 Whalespan. Independent, evidence-graded longevity.

Nobody Taught You THIS About Sex | Bryan Johnson Podcast — Whalespan

Content›Video›Nobody Taught You THIS About…

Nobody Taught You THIS About Sex | Bryan Johnson Podcast

Bryan Johnson38m · 2025-08-07

Claims Made

71

Claims Supported

65

Support Rate

92%

Support rate

65 of 71 claims supported

65 supported6 partial / not

Claims from this content

59

✓Well SupportedApplying an ice pack to the genital area while in the sauna can counteract the negative effects of sauna on spermatogenesis.✓Well SupportedErectile dysfunction can precede cardiovascular events by approximately seven years, necessitating a cardiovascular health assessment for organic impotence.✓Well SupportedNighttime erections are an important biomarker for overall health.✓Well SupportedBryan Johnson's goal for nighttime erection duration is 3 hours and 30 minutes.✓Well Supported

More from Bryan Johnson

Bryan Johnson's Blueprint Rapamycin Protocol

Discussion

Native comments, Twitter mentions, and Reddit threads about this content — surfaced together so the conversation isn't fragmented across platforms.

M

Share your read of this content…

Posting publicly as you · linked to your social profiles

Sort by:

AV

A. Volkovreader

4h

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

NP

N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

Men who ejaculated approximately 21 times per month had a 20-31% lower risk of prostate cancer compared to men ejaculating 4-7 times per month.

✓Well SupportedOptimal S-100B levels are in the midrange, as elevated or low levels signal brain stress or insufficient repair.

◐Partially SupportedWomen frequently choked during sex had significantly higher levels of S100B in their blood compared to those who had not.

✓Well SupportedRecent estimates suggest there are approximately 3.8 trillion bacterial cells in the human gut, which is about 1.3 times the number of human cells.

◐Partially SupportedElevated S100B protein levels can be a marker of subclinical brain damage.

◐Partially SupportedFecal-to-oral transmission is the second most common cause of infectious disease transmission globally.

✓Well SupportedSleep and sexual behavior have a bidirectional relationship, where sex can improve sleep and sleep can improve sexual behavior.

◐Partially SupportedElevated S100B protein levels are observed in sleep-deprived individuals, similar to levels seen in traumatic brain injury.

✕Not SupportedDouching has a negative effect on vaginal health.

◐Partially SupportedThe Adam Health device measures penile engorgement and duration during nighttime erections.

◐Partially SupportedMaintaining hygiene practices during sexual activity is important to prevent serious infections like UTIs.

✓Well SupportedWomen have a higher risk of UTIs than men due to having a shorter urethra.

◐Partially SupportedOral-anal sex can transmit Hepatitis A, E. coli, HPV, herpes, gonorrhea, and worms.

✓Well SupportedSexual activity can mimic aspects of exercise, with an average energy expenditure for women of 60-70 calories per encounter (approximately 6-7 METs).

◐Partially SupportedStarting the last meal at least 2 hours before bed, and progressively increasing this interval to 3, 4, 5, and 6 hours, can lead to nighttime erections.

✓Well SupportedOrgasms may contribute to benefits like improved HRV and reduced depression symptoms through nervous system activation.

◐Partially SupportedYoung adults may lack the knowledge to interpret that pornography has no safeguards regarding biological safety and may improperly conclude that depicted acts are safe.

◐Partially SupportedPornography often does not depict negative health consequences, potentially leading to misinformation.

◐Partially SupportedSexual activity can boost the immune system by increasing IgA levels.

◐Partially SupportedA protocol for safe oral-anal sex includes cleaning the area with gentle, unscented soap, trimming and cleaning fingernails, avoiding the activity after large meals or during diarrhea/GI issues, using protection like dental dams, knowing the risks (Hepatitis A, E. coli, HPV, herpes, gonorrhea, worms), avoiding it with visible sores or recent STI diagnosis, and performing aftercare such as rinsing the mouth, brushing teeth, and washing hands and face.

◐Partially SupportedSexual practices can influence how the body processes food, creating a feedback loop that affects dietary choices and protocols.

◐Partially SupportedErectile dysfunction indicates a deeper internal bodily issue and should not be ignored.

◐Partially SupportedRegular sexual activity is associated with a 20-40% reduced risk of depression.

◐Partially SupportedSex acts as a stress reliever.

◐Partially SupportedErectile dysfunction can be a primary symptom of cardiovascular disease, hormone dysregulation, burnout, or elevated cortisol.

◐Partially SupportedSexual contact is the most common cause of urinary tract infections (UTIs) in young women, with 75-90% of acute bladder infections occurring within 24 hours of intercourse.

◐Partially SupportedHeightened arousal states can lead individuals to make decisions they would not otherwise make when not aroused, suggesting decisions about behavior should be made prior to entering such states.

◐Partially SupportedGetting tested for STIs/STDs before sexual activity and discussing sexual health can be considered an advanced form of foreplay.

◐Partially SupportedHygiene practices are crucial to prevent contamination during sexual activity, particularly for individuals aged 25 and under.

◐Partially SupportedWomen experience arousal cycles similar to men, measured by elevated pH episodes.

◐Partially SupportedIncreasing sex frequency is recommended for longevity.

◐Partially SupportedRegular sexual activity is associated with a lower risk of all-cause mortality.

◐Partially SupportedOral-to-genital contact can transmit fecal microbes.

◐Partially SupportedElevated S100B protein levels may indicate damage to the blood-brain barrier.

◐Partially SupportedTo have a healthy and strong sex life, other aspects of health such as sleep, nutrition, and exercise must be taken care of.

◐Partially SupportedNighttime erections serve as a health metric and a systems check of the body.

◐Partially SupportedChoking may pose risks and warrants further research, as indicated by studies on S100B protein.

◐Partially SupportedPost-sexual activity hygiene includes rinsing the mouth, brushing teeth, washing hands and face, and general cleaning.

◐Partially SupportedBacterial contamination is a general risk associated with all types of intercourse.

◐Partially SupportedElevated pH episodes in females serve as a systems check for cardiovascular, psychological, and physiological health.

◐Partially SupportedGut microbiome composition is correlated with how the body utilizes nutrients, specifically amino acids versus carbohydrates and fats.

◐Partially SupportedBeing choked during sex can lead to an increase in the protein S100B, which is linked to traumatic brain injuries.

◐Partially SupportedMaking decisions about sexual hygiene protocols and understanding them before engaging in sexual interaction is a recommended practice.

◐Partially SupportedPoor health, often stemming from poor diet and sleep hygiene, causes significant pain and is paradoxically celebrated or dismissed by culture.

◐Partially SupportedPrevention of STIs/STDs is more effective than treatment.

◐Partially SupportedImpaired sexual function can signal underlying issues with hormones, vascular function, or cardiovascular health.

✕Not SupportedIndividuals with visible sores, recent STI diagnosis, unknown STI status partner, multiple partners, weakened immune system, or gut infections should avoid oral-anal sex.

✕Not SupportedMaking lifelong health decisions based on misinformation or lack of information is detrimental.

◐Partially SupportedThe physical exertion of sexual intercourse provides health benefits.

◐Partially SupportedMost women require clitoral stimulation to achieve orgasm.

◐Partially SupportedThe penis has a similar number of nerve endings to the clitoris.

◐Partially SupportedWomen experiencing pain during sex should seek resolution.

◐Partially SupportedOne in two sexually active people will contract an STI by age 25.

◐Partially SupportedFollowing health protocols including sleep, nutrition, and exercise leads to increased wellness and a healthy sex life.

◐Partially SupportedSex can lead to subjective benefits such as reduced pain, increased pain thresholds, improved sleep quality, and potentially improved heart rate variability.