Vegetables containing more oxalic acid include sweet potato, celery, spinach, Brussels sprouts, eggplant, leek, cauliflower, beet, carrot, green pepper, eggplant, lettuce and celery. On the other hand, vegetables with low oxalic acid content include lettuce, pumpkin, bean sprouts, cabbage, radish, cauliflower and cucumber.

2. Oxalic acid-rich drinks and fruits

Beverages with high oxalic acid content include beer, most teas, cocoa and chocolate milk, as well as all beverages made of chocolate. If you are on a low oxalic acid diet, you should drink more water, or you will be in danger of kidney calculi. Fruits with high oxalic acid content include taro, figs, blueberries, raspberries, plums and oranges. But the contents of apples, lemons, limes, cherries and melons are low.

3. Cereals and meat rich in oxalic acid

Crops rich in oxalic acid include amaranth, quinoa, wheat germ, oatmeal and whole wheat flour. Except some vegetarian meat (such as bean products and tofu), most meat products contain a lot of oxalic acid.

4. Oxalic acid-rich beans and nuts

Most beans, nuts and seeds are foods with high oxalic acid content, including peanuts, cashews, almonds, pecans, sunflower seeds, black beans, chickpeas, kidney beans, black beans and Lima beans. But the contents of lentils and water chestnuts are low.