Sam Wikeley
speaker
111 appearances
2 recordings
1 series
first heard Jul 2026
last heard 6d ago
Sam Wikeley’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in Sep 2026 with 1.
Appearances
And so they apply this concept to different individual organs and body systems, for example, the brain or the skin.
I spoke to the lead author of the study, Junhao Wen.
He is a computational neuroscientist at Columbia University.
Junhao told me that he is a light sleeper himself.
So the study was partially motivated by personal experience.
So how did they go about this study though, finding the age?
So to look at this, they used data from the UK Biobank.
This is a massive database of around half a million British people tracking health-related data.
And they use self-reported sleep duration to track the biological clocks of 23 different parts of the body.
And what they found is that this U-shaped pattern persists across nine different parts of the body.
These include the brain, the lungs, liver and skin.
The findings taken together suggest that an optimal amount of sleep is around 6.5 to 7.8 hours for women and 6.4 to 7.7 hours for men.
What if I'm sleeping way too little or way too much?
Yes, the most important thing here is to not freak out too much.
So these are population-level results, and there is no Mr. Average.
Applying these results to the individual is tricky.
Also, Junhao told me that disentangling cause and effect is tricky.
For example, are the biological ages of specific organs higher because of lack of sleep, or is another pathology causing the lack of sleep?
Michael Grandner is a psychiatrist at the University of Arizona.
Dr. Grandner told me that sleep duration is just one dimension of sleep.
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