this post was submitted on 14 Mar 2025
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Some speculate this might be what we were evolutionary designed/breed for & it might keep some processes (cardiovascular, liver) "young" if the preceding stress doesn't have the contrary effect.
I'm particular our bodies are good at selecting the cells and organelles that are most damaged and decrepit to be broken down for material and fuel for the rest of the body. Makes sense they'd evolve to do that.
When you refeeding after a long fast, growth hormones are released that trigger replacement. So there's seem to be some rejuvenation and other benefits.
It's difficult to measure key parts of the process on a still living subject so we have to guess and extrapolate for humans. And other aspects aren't well explained or understood. So there's a lot of questionably reliable info and explanations, some of which are plausible. Like this!