Yeah - well, I like to think of myself as 5½ years old .....
Jupiter years, that is

. But if that fails to persuade folks....
I looked at the photo at the head of the
Graun article. A pretty young woman's face, but with an inset depicting a much older face with wrinkles. Well, I'm certainly wrinklier than the young face, maybe almost (but not quite) as wrinkly as the old face inset. What does that prove? What were in the list of 'physiological markers' they used? BP I know about - mine's being regularly monitored and I'm told each time that I'm 'OK for my age'. Other benchmarks are perhaps a bit more difficult to determine - unless you have access to expensive lab facilities or scanners.
Does cycling make a difference to all this? My father did a little cycling - less than I do - and he succumbed to heart failure 5 years younger than I am now. So maybe cycling has contributed to keeping the ticker ticking. Or maybe it's more to do with better knowledge about dietary, and maybe the medication I'm on. Who can say?
What cycling
hasn't done, this will surprise some of you, is to improve my
mental health. In fact it's probably aggravated things. I won't go into details just now. But I still strongly urge people to cycle if they can.