Kate Tolo, a 30-year-old partner of tech entrepreneur Bryan Johnson, has launched a 100-day tracking experiment intended to collect approximately 14 million data points on female health. Accompanied by a twelve-member medical team and backed by a budget of around CHF 2.1 million, the public project utilizes over 50 tracking devices and more than 100 daily tasks to map her body’s physiological markers, specifically addressing a personal diagnosis of endometriosis.
Daily Monitoring and the 100-Day Protocol
Tolo’s daily routine begins at 6:30 a.m. with saliva collection in a small tube, followed by measurements of body temperature, heart rate variability, weight, hormone levels, and pelvic floor strength, alongside photographic documentation of her physique. Her schedule includes a weighted vest walk, a 30-minute workout in an in-home gym, and the consumption of numerous supplements, accompanied by multiple daily blood, hearing, breath, taste, and stool sample analyses. At 21:42 daily, Tolo inserts an acrylic device she calls a “techno-tampon” into her vagina to measure fluctuations in blood flow before sleeping 13 minutes later, according to reporting by 20 Minuten.
According to supplementary financial reporting, the project is part of a broader longevity effort through Immortals, a joint company operated by Tolo and Johnson. Additional coverage notes that Johnson announced the partnership on X, highlighting a planned annual investment exceeding $2 million to develop female-specific longevity protocols with cumulative data points targeted across tracking phases. Tolo, an Australian-origin entrepreneur and 2024 Paris Olympics bronze-medal basketball player, previously worked at The North Face and joined Johnson’s brain-computer interface company, Kernel, in 2021.
Addressing Endometriosis and Historical Research Gaps
The decision to undertake the rigorous protocol stems partly from Tolo’s personal history of severe menstrual pain, leading to a non-invasive diagnosis of endometriosis in July. Endometriosis affects an estimated 190,000 to 280,000 women of childbearing age in Switzerland, according to the University Hospital Zurich (USZ), and roughly 190 million women globally, representing about 10 percent of the female population of reproductive age as reported by the World Health Organization. Typical symptoms include severe menstrual pain, chronic pelvic pain, pain during intercourse or bowel movements, and fertility challenges, with diagnostic delays frequently exceeding five years.
Tolo told the Wall Street Journal that her motivation differs from Johnson’s anti-aging focus, stating, “I’m doing this truly because I believe this is a way for women to be understood.” Medical institutions note that the exact cause of endometriosis remains unclarified and no cure exists, though treatments include pain medication, hormone therapy, or surgery, while European reproductive medicine guidelines now recommend ultrasound or MRI over mandatory laparoscopy for initial evaluation. Historically, women were frequently excluded from clinical research due to hormonal fluctuations during the menstrual cycle, a practice addressed in the United States by National Institutes of Health guidelines implemented in 1993 requiring female inclusion.
Did You Know? Kate Tolo is an Olympian who won a bronze medal in basketball for Australia at the 2024 Paris Olympics before shifting into full-time longevity and health tracking studies.
Scientific Limitations and Public Reception
Experts and observers note that individual N-of-1 tracking experiments cannot automatically translate generalized treatment solutions for millions of other endometriosis patients, serving instead to analyze single-subject physiological responses. Despite these methodological limitations, the project has drawn substantial engagement across social media platforms, where users have posted supportive commentary thanking Tolo for bringing financial and public attention to historically under-researched female health conditions.
Expert Insight: While intensive single-subject data collection projects generate massive datasets, medical researchers emphasize that personalized biometric tracking cannot replace randomized controlled trials when establishing generalized therapeutic standards for complex chronic conditions like endometriosis.
Frequently Asked Questions
What is the primary goal of Kate Tolo’s 100-day experiment?
According to the sources, Tolo aims to collect approximately 14 million data points using over 50 tracking devices to generate detailed metrics on female physiology and raise visibility for endometriosis.
How is the project financed?
The initiative is funded by Immortals, a joint company established by Tolo and Bryan Johnson that sells health products and plans female-specific health offerings.
Is surgery required to diagnose endometriosis?
No. According to European guidelines cited in the reporting, ultrasound or MRI can be utilized as part of the diagnostic evaluation, with surgery or laparoscopy reserved for cases where imaging is inconclusive or treatments fail.
What specific changes or insights do you hope to see emerge from large-scale tracking initiatives in women’s health?