Biohacker says partner has 'top 1% of vaginas' after publishing oral sex report

Barmy Bryan Johnson went down on his partner and shared the results of a microbiome report online, which he said found she had a vagina in the 'top 1%' and 'the lab found nothing bad to report'

15:26, 30 Apr 2026Updated 13:25, 05 May 2026

[The couple are open about their sexual health]

The couple are open about their sexual health(Image: Bryan Johnson)

A billionaire "biohacker" says his partner has a "top 1%" vagina after performing oral sex on her and posting the results online. Barmy Bryan Johnson, 48, said Kate Tolo's sample was "dominated by the single most protective bacterial species a vagina can host".

He posted on X: "Just gave Kate oral sex. Goodnight everyone." But he later added: "This is her vaginal microbiome report. 100/100 score. Top 1% of all vaginas."

He went on: "Only about 25-30% of reproductive age women globally are L. crispatus-dominant, and dominant usually means above 50%. Kate is at 98.7%. The lab found nothing bad to report."

[Kate's vaginal report]

Kate's vaginal report(Image: Bryan Johnson)

He then told followers: "This is linked to lower risk of BV, UTIs, yeast infections, HPV persistence, HSV-2 and HIV acquisition, preterm birth, and improved IVF outcomes.

"A vaginal microbiome is downstream of everything: sleep, glucose control, stress, gut health, sexual health, immune function, what you eat, and what you put in it."

The tech mogul, who has spent a fortune trying to reverse the ageing process and featured in the Netflix documentary Don't Die, used a test from Tiny Health, which offers microbiome testing for every stage of life.

[Bryan Johnson says he has reversed the ageing process]

Bryan Johnson says he has reversed the ageing process(Image: Bryan Johnson)

He was met with a barrage of replies from people begging him to "share a bit less". But his partner and Blueprint co-founder Kate Tolo back him up, replying: "I know this seems unhinged, but oral sex isnt talked about enough.

"Oral sex carries genuine risks. HSV-1 (oral herpes) can be transmitted to the genitals and vice versa. HPV passed through oral sex is now the leading cause of oropharyngeal cancers in the US (surpassing tobacco).

"And oral gonorrhea in particular is becoming antibiotic-resistant at alarming rates. The bacteria in saliva can also disrupt the vaginal microbiome, and studies have linked receptive oral sex to higher rates of bacterial vaginosis.

[Bryan and Kate]

Bryan and Kate(Image: Bryan Johnson)

"Oral sex is great the problem is that we dont treat it seriously. People who would never skip a condom will go down on a new partner without a second thought.

"People dont get tested for oral STIs. or talk to partners about dental health, recent illness, or when they were last screened.

"Its a public health gap. Im grateful I have a partner who takes my health, his health, and our collective health seriously. Be safe lovely humans."

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