07/09/2026
Why does spinach make your teeth feel strange?
Have you ever eaten spinach and noticed that weird, chalky feeling on your teeth afterwards?
There’s a reason for it.
Spinach naturally contains oxalic acid. When you chew it, compounds can interact with calcium in your saliva and create tiny crystals that leave your teeth feeling temporarily rough or gritty.
It’s harmless - but once you notice the “spinach teeth” feeling, it’s very hard to un-notice it. 😄