[riskassessment]

If you throw some data at a clustering algorithm, the clustering algorithm is guaranteed to give you clusters back. So I'm not convinced about the results suggesting a precise pattern of rapid aging.

[bboygravity]

Are you at or over 40?

Anecdotally I feel I noticed a very fast ageing speed between 38 and 40. Suddenly got white hairs, feel more tired, more wrinkles, way harder to keep VO2max up (I run a lot), muscle sores after training suddenly lasting up to 3 days instead of 1, face looks older, etc.

I feel like that all happened real fast around this age.

[isoprophlex]

I'm 38. We had three kids over a period of 8 years. Looking at old pictures I seemingly held on for a long while, until something hit me at 35-36?!

It's like there's two versions of me now, the one who was somehow moderately fit by biochemical decree, with a healthy amount of flesh to his face, voluminous dark blonde hair and a pleasant complexion...

... And the grey haired, weathered, lined, dessicated mummy I see in the mirror. I love my kids dearly but the constant caring really takes something out of you. That and the whole getting older thing in TFA.

I keep telling myself I'll get a gym membership soon to reclaim some of my dignity.

[astura]

I'm well into my 40s. I've noticed aging in almost all my friends and work colleagues my age as well as those up to 10 years younger than me. I haven't noticeability aged myself yet though. Don't have any grey hairs, no wrinkles, don't look older than I did in my 20s.

It's not just my perception either, other people assume I'm early 20s.

I can't really relate to the physical stuff though because muscle sores after training was always 3 days for me and it was always difficult to keep VO2max up, even in my early teens. So I guess I just started out in middle age.

[riskassessment]

I said I was skeptical of there being a precise pattern of rapid aging. I never said I was skeptical that rapid/non-linear aging can occur. If you did experience rapid aging in the way the paper measured this from 38-40 that is more evidence in support of my point that there is some broad random distribution of when rapid aging occurs and this paper and blog post overintepret the data to mean rapid aging occurs precisely in your mid-forties and at 60.

[bongodongobob]

Sounds like something someone < 40 would say. To anyone over, I feel like this study is pretty obvious. I'm in my early 40's and whatever change this is, has been discussed multiple times with my peers, active lifestyle or not, wealth or not, married or not, physical career or not. Everything starts to feel a little harder, whether it's exercise, problem solving, memory, sleep, sex drive, appetite, fuckin everything. Things change in your late 30s, for sure.

All young people think they are special and age is just a number. The rest of the population knows that isn't true. Spare me your weight lifting 80 year old, or "my grandpa worked the farm til he was 90" stuff, we all know those are extreme outliers.

[uamgeoalsk]

Turning 44 this year and none of this has hit me at all? Still staying up all night on weekends, working harder than I ever did (not more hours, though), feeling more motivated to take on both paid and unpaid work outside of my job. And my sex drive just as strong (and just as unfulfilled!) as in my 20s and 30s.

[petesergeant]

Is it possible that scientists employed at Stanford will have also had this insight, and worked around it?

[deegles]

possible, yes. did they? that's the question

[f1shy]

It is also very possible that they have big incentives to ignore those just to get something published, don't you think?