The human stomach produces a new lining every three to four days.
Why it is true
The gastric acid in the stomach is strong enough to dissolve metal. To prevent the organ from digesting itself, the cells of the stomach lining constantly renew themselves, creating a completely new protective barrier every few days.
Source: Scientific American
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Related facts
The human stomach replaces its lining every three to four days.
The human stomach gets a completely new lining every few days to prevent it from digesting itself.
It takes your body roughly 12 to 24 hours to completely digest a meal.
The stomach renews its lining every 3 or 4 days.