Bryan Johnson's Blueprint team tracks hundreds of biomarkers to test anti-aging protocols because the field has too many conflicting opinions. They won't implement anything they can't measure, and they share the results openly.
Almost no anti Asian scientist agrees with another anti aging scientist. They all have their different opinions. So what I take is based upon my team's analysis, the evidence and the measurements we get from my body. It's why we generate hundreds of biomarkers. We're trying to see if what we're doing is working or not. Now, someone else may do something entirely differently and they may have data too, and that's okay. The science is still emergent. We don't really have the answer to all these questions. We're trying to show data all the time. We start with the evidence, we do the protocol, and then we share the data. So if we can't measure it, we typically don't do it.