Bryan Johnson says his partner, Kate Tolo, will follow an intensive, instrumented daily protocol to generate 14 million data points about her menstrual cycle as part of a project funded by Immortals (reported at roughly $2.6 million). Overseen by a 12‑person medical team and using about 50 devices — including a so‑called "techno tampon" — the regimen logs samples, blood draws, metabolic and sensory tests and continuous monitoring from morning until night. Supporters say the dense longitudinal data could help close gaps in women’s health research; critics may question generalizability, participant burden and privacy.
Kate Tolo to Generate 14 Million Menstrual Data Points in Ambitious 'World‑First' Study
The 88 things biohacker Bryan Johnson’s girlfriend is doing every day for a ‘world first’ in menstrual health research
Summary: Bryan Johnson says his partner, 30‑year‑old Kate Tolo, will follow an intensive, highly instrumented daily protocol to generate 14 million data points related to her menstrual cycle. Funded by the couple’s company Immortals (reported at about $2.6 million), the study will be overseen by a 12‑person medical team and use roughly 50 monitoring devices — including a device Johnson describes as a "techno tampon" to track menstrual blood flow.
Bryan Johnson and Kate Tolo pose for a photo together. Tolo will undergo a major effort to collect millions of data points related to her menstrual cycle in an effort to better understand women's health (@bryan_johnson/Instagram)
What The Project Involves
This longitudinal effort aims to capture dense, continuous measurements across hormonal, metabolic, neurological and microbiome domains to address gaps in medical understanding of women's physiology. Johnson has framed the work as creating what he calls the most comprehensive dataset on a female menstrual cycle in history. The regimen documented on social media shows a tightly scheduled day of samples, sensors and tests from waking until sleep.
From 8 a.m. to 11 a.m. there are more measurements, including brain, pain and grip strength (@bryan_johnson/Instagram)
Team, Funding and Devices
Team: 12 medical staff will support the protocol. Funding: Reportedly ~ $2.6 million via Immortals. Devices: ~50 instruments, including continuous monitors, breath and metabolism trackers, blood-collection systems, sensory tests, red‑light therapy and the so‑called "techno tampon."
Bryan Johnson's $2 million-a-year anti-aging program was detailed in last year's Netflix documentary Don't Die: The Man Who Wants to Live Forever (AFP via Getty Images)
Selected Daily Timeline (Highlights)
The schedule Johnson published lists minute‑by‑minute activities from about 6:30 a.m. to 9:55 p.m. Below are selected highlights; the publicly shared timetable also includes many repeated measurements throughout the day.
- 6:30 a.m. Wake, stop sleep trackers and spit into a tube.
- 6:33–7:06 a.m. Early samples and measures: cheek swab, sublingual temperature, removal of the techno tampon, urine samples for cortisol and other hormones, pelvic‑floor strength test, nervous‑system assessment, and a breath test into a metabolism tracker (including a 10‑minute breath mask).
- 7:21–7:57 a.m. Sun‑therapy light, urine color logging, blood pressure, oral care (Waterpik, floss, brush, tongue scraper), vaginal microbiome swab, scale, body photos and hydration tracking.
- 8:04–9:45 a.m. Performance and sensory tests: reaction time, grip strength, skin and brain measurements, additional urine and blood draws, a "speed of aging" blood test, and vision, smell and taste tests. Hearing and pain assessments appear later in the morning.
- 11:07 a.m. Protein‑rich meal, followed by full‑body and scalp red‑light therapy and stool sampling before noon.
- 12:08 p.m. Techno tampon re‑inserted; midday routine includes watching films, taking supplements, preparing water and donning a heart‑rate monitor and weighted vest for a short walk and gym workout.
- Afternoon includes showering, skincare, and work blocks interspersed with repeated metabolism tracker tests and additional meals.
- Evening repeats oral hygiene and sanitary prep for the next day, mood/appetite/stool logging, a red‑light face mask before bed, continuous glucose monitor insertion and a swallowed temperature pill. Techno tampon is reinserted before sleep.
Purpose And Context
Proponents say dense longitudinal sampling like this can reveal time‑resolved relationships between hormones, metabolism, microbiome composition and symptoms across a menstrual cycle. Critics and observers may raise questions about generalizability from a single‑participant, heavily instrumented protocol, participant burden and data privacy. Johnson positions the work as an attempt to fill longstanding gaps in women's medical research by producing an unprecedented volume of detailed measurements.
Note: Johnson has publicly shared the timetable; the list above is a condensed, clarified version of the minute‑by‑minute schedule he posted. The project’s methods, intended outcomes and peer‑review plans have not been fully detailed in this summary.
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