A new aging biomarker system has been published and it looks pretty robust.

Chronological age is now generally accepted by academics as being a poor means to identify how a person is aging. Far more useful is a person’s biological age in evaluating how fast someone is aging.

Biological age is assessed using indicators known as aging biomarkers, and as rejuvenation biotechnology draws ever nearer, there is an urgent need for more effective biomarkers. As well as finding effective biomarkers, another challenge in the field of aging research is seeking consensus among academics as to which biomarkers are the best ones to use.

Ok, but why does that matter?

Being able to accurately assess how someone is aging could help them and their healthcare provider to optimize their personal health strategy. It could help to highlight potential problem areas of health before they become serious, for example.