Assessing biological age by observing physical appearance is less sophisticated than analyzing hundreds of monthly biomarkers from bodily fluids, DNA methylation, fitness tests, and imaging.

“A lot of people think their eyes are the best scientific instrument to measure one's age so look at somebody and say well I think blank the more sophisticated way of doing it now that we have all this great science is looking at hundreds of biomarkers that we're generating on a monthly basis so we look at all the bile fluids blood saliva stool we look at DNA methylation Fitness tests ultrasound MRI hundreds of markers and we use that data to assess what's really happening inside the body”