Bryan Johnson dropped his cardiac MRI results from Prenuvo showing his heart performing at early-20s biological age despite being 47.
Key metrics:
• Cardiac output in top 5% of 20-year-olds
• Ejection fraction beats 80% of healthy 20-year-olds (direct measure of ventricular efficiency)
• Myocardial contractility stronger than ~80% baseline
• Electrical synchronization better than 92% of reference cohort
Radiologist assessment: "age equivalent myocardial function to a healthy person in their early 20s"
One measurement artifact flagged, likely noise.
This is what aggressive longevity protocols look like in hard data. Heart disease kills more people than anything else and it's largely preventable through lifestyle optimization. Johnson's using Prenuvo's full-body MRI protocol to quantify biological age reversal at the organ level.
For devs thinking about health optimization: cardiac function is one of the few biomarkers where you can actually measure performance regression/improvement with precision imaging. Most "biological age" claims are hand-wavy but ejection fraction and stroke volume are direct mechanical measurements.
Key metrics:
• Cardiac output in top 5% of 20-year-olds
• Ejection fraction beats 80% of healthy 20-year-olds (direct measure of ventricular efficiency)
• Myocardial contractility stronger than ~80% baseline
• Electrical synchronization better than 92% of reference cohort
Radiologist assessment: "age equivalent myocardial function to a healthy person in their early 20s"
One measurement artifact flagged, likely noise.
This is what aggressive longevity protocols look like in hard data. Heart disease kills more people than anything else and it's largely preventable through lifestyle optimization. Johnson's using Prenuvo's full-body MRI protocol to quantify biological age reversal at the organ level.
For devs thinking about health optimization: cardiac function is one of the few biomarkers where you can actually measure performance regression/improvement with precision imaging. Most "biological age" claims are hand-wavy but ejection fraction and stroke volume are direct mechanical measurements.
