Oxalates are naturally occurring compounds found in many plants, including leafy greens, nuts, and fruits. They can bind with minerals like calcium, potentially forming crystals that may lead to health issues, particularly in individuals prone to kidney stones. While most people can consume oxalate-rich foods without problems, those with certain health conditions, such as kidney stones or hyperoxaluria, may need to limit their intake. Cooking methods, like boiling, can reduce oxalate levels in some foods, making them safer for consumption.