this post was submitted on 25 Jul 2023
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Every atom in your brain gets replaced every four five years anyway so clearly it's the position and structure of the atoms that's important rather than the atoms themselves. So obviously there is no point worrying about it because it happens anyway, and you're clearly fine.
The individual atoms probably get replaced far more often. And I think that, depending on how you look at -you-, the -you- of a year ago isn't the same -you- as who you are now; the change is just so gradual that you don't notice.
This is just blatantly untrue.
Some cells don't renew hardly at all, some do it all the time but the brain isn't "renewed" every X years.