Many health websites, such as WebMD and Healthline, provide lists of foods that are high in oxalate. Foods that have high oxalate content are also listed on the websites of several health institutions, including University of Pittsburgh Medical Center and Wake Forest Baptist Medical Center.
A high-oxalate diet increases the risk of kidney stone formation. Foods with high oxalate content include beans, dark green vegetables, nuts and oranges. Coffee, chocolate and black tea are also high in oxalate.
WebMD offers a simple list, only providing commonly consumed high-oxalate food items. Wake Forest Baptist Medical Center provides a more comprehensive list that includes the oxalate content of each food item. Both the University of Pittsburgh Medical Center and Healthline, in addition to providing lists of high-oxalate foods, offer further information on how to prevent kidney stones.