“Don’t Die,” biohacker Bryan Johnson recently shared insights about his girlfriend, Kate Tolo, who is working on what he claims will be the most detailed compilation of data regarding the female menstrual cycle.
Tolo’s intricate schedule features over 100 tasks that involve more than 50 devices to track various bodily functions and collect samples of her blood, urine, and stool, as Johnson detailed in a social media post.
Interestingly, even while she sleeps, Tolo is monitored with a sleep ring and what Johnson termed a “techno tampon.”
In a brief exchange, Johnson—who follows a $2 million-a-year anti-aging regimen highlighted in a Netflix documentary—expressed that Tolo’s goal is to enhance medical understanding. “Women are not well understood medically,” he remarked, adding that Tolo aims to offer an unprecedented data set on menstrual cycles.
Regarding the “techno tampon,” Johnson noted, “We will be sharing more on that soon.” Tolo, 30, hinted at this gadget in a recent photograph, referring it as an acrylic device designed to monitor variations in blood flow.
This project, estimated to cost $2.6 million annually, is financed by their company, Immortals, which provides supplements and access to prescription medications along with concierge medical services.
On social media, Johnson claimed Tolo is collecting 14 million data points related to her cycle and is under the supervision of a 12-member medical team. “This is a world first for female health,” he stated.
Johnson also made a commitment to share all results from the study, including both positive and negative outcomes, as well as practical insights. “This will be the most quantified menstrual cycle ever, and it’s just to gather baseline measurements,” he said, adding that after the initial 100 days, they plan to test different interventions.
Recently, Johnson revealed that Tolo had been diagnosed with endometriosis, a condition where tissue similar to the uterine lining grows outside the uterus.
Tolo also disclosed to the Journal that she was diagnosed with polyendocrine metabolic ovarian syndrome and adenomyosis, accompanied by significant pain during her menstrual periods.
Interestingly, this disclosure follows Johnson’s recent announcement that he has autoimmune gastritis, a chronic condition affecting his stomach’s acid-producing cells. He described the impact as his stomach “eating itself,” which he suspects may relate to an earlier diagnosis of autoimmune hypothyroidism he received at age 21.
Reflecting on his health journey, Johnson expressed gratitude for taking care of himself over the past five years, indicating that his situation could have been far worse otherwise.






