TIL the human stomach gets a new lining every 3–4 days to prevent it from digesting itself.

https://www.ncbi.nlm.nih.gov/books/NBK26875/
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1q9lcjh/til_the_human_stomach_gets_a_new_lining_every_34/