Lots of interest currently into relationship of telomere length on aging - or vice versa.
Telomeres are a region of repetitive nucleotide sequences at the end of chromosone which reduce in length over time - therefore hinting they may be involved in the aging prcess, i.e. length reduces to zero and cell blows up (I'm simplifying slightly!)
Telomere length testing kit - Titanovo
Measured in relative T/S and in absolute length in kbp (kilobasepairs)
TeloYears - finger prick blood DNA test provides your Average Telomere Length (ATL)
Exercise lengthens telomeres (slows aging)NHS - 29-Nov-2018
Endurance and interval training groups saw telomeres increase by over 3%.
2018 Telomere Length Update by Liz ParrishBioviva Science - 24-Sep-2018
A case of muscular and cellular rejuvenation thanks to myostatin and telomerase therapies
Telomerase Gene Therapy Does Not Increase Cancer RiskLife Extension Advocacy Foundation (LEAF) - 27-Aug-2018
New research proves telomerase therapy's safety by making its effects within the cell temporary