Key points from article :
Natural chemical in urine appears in higher concentrations as we age.
8-oxoGsn is a byproduct of slow, lifelong damage to RNA.
Deterioration of RNA would be a proxy for measuring aging.
It is a well-known byproduct of the oxidation of guanine.
More than 1,200 people between 2 and 90 years old were tested.
It's easy to detect in urine.
The study was published in the Frontiers in Aging Neuroscience journal.
