Oxalic acid is a naturally occurring compound in many fruits, vegetables, nuts, and whole grains. While small amounts of oxalic acid are not harmful, this compound can inhibit the absorption of other ...

Oxalic acid, or oxalate, is a naturally occurring organic compound in plant foods like vegetables, fruits, grains, and nuts. Your body also produces small amounts of oxalate. Oxalic acid is sometimes ...

Q: I've heard that spinach and some other vegetables contain significant amounts of oxalic acid, which can interfere with absorption of some minerals. What do you think about the oxalic acid issue? A: ...