That problem (aka "spinach teeth") is common for people who consume the leafy green. And it turns out there's a scientific reason behind it: Oxalates. Oxalates are types of salts of oxalic acid, and ...

Why does eating cooked spinach make my teeth feel funny? Spinach contains a large amount of oxalate crystals – mineral salts of oxalic acid. When spinach is cooked, especially canned, heat-processed ...

When we talk about crystals around here, we’re generally talking about the quartz variety used to make oscillators more stable, or perhaps ruby crystals used to make a laser. We hardly ever talk about ...

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 ...