Well I just watched the most eye opening Google Talk. https://youtu.be/9nXop2lLDa4. Dr. David Sinclair does a brilliant job and speaking in ways us non-scientist peeps can understand. Love the analogy using CD disks and how it relates to our cells that make us age.
This is a huge field of study right now.
Looking at this image think of your DNA the purple lines and the blue circles are the analog signal that tells your DNA cells who they are and they they are suppose to do. As we age those blue circles get scratched like an old CD and doesn’t work right so then your DNA Cells don’t know who or what they are suppose to do really. Interesting concept really.
Check out his google talk. Very interesting stuff.