Bryan Johnson, the tech millionaire and self-proclaimed biohacker known for his extreme anti-aging Blueprint protocol, is once again making headlines for his unusually public approach to health — this time involving his girlfriend and Blueprint co-founder Kate Tolo.
On May 23, Johnson posted a photo of Tolo undergoing a transvaginal ultrasound, announcing that she has suspected endometriosis. “Examining Kate’s 1% [vagina]. She has suspected endometriosis,” he wrote on X. “This affects at least 1 in 10 women, likely more.”
The post marks the latest chapter in the couple’s very public health optimization journey, which previously went mega-viral in late April when Johnson shared Tolo’s vaginal microbiome test results — dubbing them “top 1% of all vaginas” after the test scored a perfect 100/100.
Johnson’s announcement, while deeply personal, highlights a condition that affects an estimated 190 million women worldwide. Endometriosis occurs when tissue similar to the uterine lining grows outside the uterus, leading to chronic pain, inflammation, scarring and, in many cases, fertility issues.
Medical experts note that women often wait 7 to 10 years for a proper diagnosis, frequently facing dismissal of their symptoms as normal menstrual pain. The condition is also one of the leading causes of hysterectomies among women aged 30 to 34.
Tolo, who is in her early 30s, is reportedly undergoing further non-invasive testing, including a pelvic MRI and hormonal labs, as the couple seeks to avoid immediate surgery.
The Blueprint Effect
Johnson, 48, has poured millions into his Blueprint project, which involves rigorous tracking of nearly every aspect of his biology in an effort to reverse aging. He has applied the same philosophy to Tolo, describing their goal as making her “the most measured female in history.”
The couple has embraced radical transparency, with Johnson regularly sharing intimate health data online. Tolo has defended the approach, arguing it helps address gaps in women’s health research.
As expected, the latest post quickly divided the internet. Many women praised the couple for bringing visibility to endometriosis, a condition that is notoriously under-researched and under-diagnosed. Supporters flooded the replies with personal stories of long diagnostic delays and struggles with chronic pain.
Others, however, criticized Johnson for what they called oversharing and treating his partner’s body like a public science experiment. The combination of the ultrasound photo and the casual reference to Tolo’s “1% vagina” reignited debates about boundaries, privacy, and performative wellness culture.
This isn’t the first time Johnson’s posts have sparked both fascination and ridicule. His earlier microbiome reveal generated tens of millions of views and a flood of memes, ranging from praise for destigmatizing women’s health to jokes about modern relationships.
For now, Johnson says he plans to continue sharing updates on Tolo’s testing and results as part of their broader mission to advance data-driven health insights. Whether this transparency ultimately helps push forward endometriosis research or simply fuels more online discourse remains to be seen.
