Bryan Johnson has measured his speed of aging 22 times in the last 12 months, finding the data uniquely insightful for measuring intervention effects.

“My team and I did this by following the scientific method. We measured the biological age of every organ. We referenced the best scientific evidence on how to slow aging and rejuvenate. We methodically completed these protocols and measured again. Rinse and repeat.”

“To assess safety and efficacy, will continue measuring nervous/respiratory/vascular/immune/hearing/vision/musculoskeletal/digestive/reproductive systems, skin/hair, & multi-clock epigenetic age.”

“Though my mind squawks, my organs are reporting 💯happy.”

“in my own process when I slowed my speed of Aging as much as I have many of my body's organs went back to a younger State they rejuvenated themselves and we know this because we're endeavoring to measure every organ of my body”

“many of my body's organs went back to a younger State they rejuvenated themselves and we know this because we're endeavoring to measure every organ of my body we bio age my heart my lungs my brain my diaphragm my nerve sensitivity on my Hills like everything we have all this information on what happens when you get these things in close-up system”

“we're also going to keep you up to date with the various measures we're tracking this includes 30 organs we're going to be analyzing”

“today I methodically track hundreds of biomarkers each day in order to measure all 70 organ systems and use my body as a vehicle for extreme Health Experimentation”