Bryan Johnson· Author
No. Uh, this is cool because you're informing people that there's such a thing as biological age. A person can be 25 and have a heart of a 20-year-old or a 30-year-old. I'm assuming here they're doing some simplified version of heart age, which is fine. Again, it builds intuition, but you really can go very deep in getting the biological age of any organ, including dozens of measurements.