Especially when an example of a biomarker is ability to hear out of the left ear. Yes, fixing that (if you could) could improve your quality of life, but unles

Especially when an example of a biomarker is ability to hear out of the left ear. Yes, fixing that (if you could) could improve your quality of life, but unless there's a train coming from the left side, it won't make you live longer. Those tests also seem ripe for the nocebo effect. All this testing and measuring seems a coping mechanism for trying to find and control some sort of objective measures in squishy, uncertain, biology.