Does spinach shit turn green?

Spinach contains a certain amount of iron, which can be combined with ammonium sulfide and other sulfides in the intestine to form iron sulfide, and iron sulfide may oxidize and turn yellow-green after contact with the air, so stool can turn green.

After eating spinach, stool discoloration is a normal phenomenon, generally does not affect intestinal function, patients stop eating spinach can return to normal.