Joe Rogan
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Appearances Over Time
Podcast Appearances
Different cell types have very different lifespans, and some last a lifetime.
I think neurons last a lifetime.
Seven-year figure is a rough average estimate of cell age.
Oh, okay, so it's not a total myth.
Not a fixed cycle where everything is swapped out all at once.
Some tissues renew very fast, while others renew slowly or hardly at all, which averages out to several years if you look at all the cells together.
So intestine lining cells renew every two to five days.
Stomach lining turns over roughly every two to nine days.
Skin surface cells replace roughly every few weeks.
Um, liver cells are typically renewed on timescales of many months to up to a few years.
Bone cells take up to a decade to fully remodel a skeleton.
Anyway, cells are changing all the time.
Yeah, you can tell you've been working.
You know, it's not like a new thing.
Your body's acclimated to it.