Living and Wellness Help Prevent Kidney Stones with a Low-Oxalate Diet By Urology, January 13, 2016 Kidney stones are a common urinary tract disorder. Caused by a buildup of minerals in urine, kidney stones are pieces of stone-like material that form on the walls of the kidney. Some people have kidney stones made from calcium oxalate (OX-uh-layt). For these people, cutting back on salt and following a low-oxalate diet may help prevent kidney stones. Who’s at Risk for Kidney Stones? In the United States, about 1 million people get kidney stones every year. Most stones are so small that they pass through the urinary system without pain. However, a large enough stone can cause extreme pain or urinary blockage. This requires treatment or surgery. Kidney stones usually affect: People between the ages of 20 and 40. Men more often than women. People who have a family history of kidney stones. RELATED: How Can I Avoid Getting Kidney Stones? A Low-Oxalate Diet Plan Many foods contain oxalate. On a low-oxalate diet, you should limit your oxalate to 40 to 50 mg each day. This may help prevent kidney stones. Be sure to drink plenty of fluids. People likely to get kidney stones should drink 8 to 13 cups of fluid each day. Your body may turn extra vitamin C into oxalate. Avoid high doses of vitamin C supplements (more than 2,000 mg of vitamin C per day). The following charts will help you eat foods low in oxalate and avoid foods high in oxalate. Food and drink serving sizes are 3.5 ounces (100 grams), unless otherwise noted. Enjoy these low-oxalate foods and drinks Eat as much of these low-oxalate foods as you like. Low-oxalate foods have less than 2 mg of oxalate per serving. Drinks Apple cider Apple juice Apricot nectar Bottled beer Buttermilk Cherry juice Cola Grapefruit juice Green tea Herbal teas (see below) Lemonade Lemon juice Limeade Lime juice Milk Oolong tea Pineapple juice Wine Herbal teas Celestial Seasonings (Sleepytime, Peppermint, Wild Forest Blackberry, Mandarin Orange Spice, Cinnamon, Apple Spice) R.C. Bigelow (Cranberry Apple, Red Raspberry, I Love Lemon, Orange and Spic, Mint Medley, Sweet Dreams) Thomas J. Lipton (Gentle Orange, Lemon Soothe, Chamomile flowers, Stinging Nettle) Dairy Cheese Buttermilk Milk Fats, nuts, and seeds Butter Margarine Mayonnaise Salad dressing Vegetable oil Meat Bacon Beef Corned beef Fish (except sardines) Ham Lamb Lean meats Pork Poultry Shellfish Starches Barley Cereals (corn or rice) Cheerios Chicken noodle soup Egg noodles English muffin Graham crackers Macaroni Pasta (plain) White rice Wild rice Fruit Avocados Bananas Cherries (Bing and sour) Grapefruit Grapes (green and red) Huckleberries Kumquat Litchi/Lychee Mangoes Melons Nectarines Papaya Passion fruit Canned peaches Canned pears Green and yellow plums Raisins (1/4 cup) Vegetables Cabbage Cauliflower Chives Cucumber Endive Kohlrabi Mushrooms Peas Radishes Water chestnut Condiments Basil Cinnamon Corn syrup Dijon mustard Dill Honey Imitation vanilla extract Jelly made from low-oxalate fruits Ketchup (1 Tbsp.) Maple syrup Nutmeg Oregano Peppermint Sage Sugar Vinegar White pepper Miscellaneous Gelatin (unflavored) Hard candy Jell-O Lemon balm Lemon juice Lime juice Limit these moderate-oxalate foods and drinks You should have no more than two or three servings of these foods per day. Moderate-oxalate foods have between 2 and 10 mg of oxalate per serving. Drinks Draft beer Carrot juice Brewed coffee Cranberry juice Grape juice Guinness draft beer Mate tea Orange juice Rosehip tea Tomato juice Twining’s black currant tea Dairy Yogurt Fats, nuts, and seeds Flaxseed Sunflower seeds Meat Liver Sardines Starches Bagels Brown rice Cornmeal Corn starch Corn tortilla Fig cookie Oatmeal Ravioli (no sauce) Spaghetti in red sauce Sponge cake Cinnamon Pop-Tart® White bread Fruit Apples Applesauce Apricots Coconut Cranberries Mandarin orange Orange Fresh peaches Fresh pear Pineapples Purple and Damson plums Prunes Fresh strawberries Vegetables Artichoke Asparagus Broccoli Brussel sprouts Carrots (canned) Corn Fennel Lettuce Lima beans Mustard greens Onions Parsnip Canned peas Tomato Tomato soup Turnips Vegetable soup Watercress Miscellaneous Ginger Malt Potato chips (less than 3.5 oz.) Strawberry jam/preserves Thyme Avoid these high-oxalate foods and drinks High-oxalate foods have more than 10 mg of oxalate per serving. Drinks Dark or “robust” beer Black tea Chocolate milk Cocoa Instant coffee Hot chocolate Juice made from high-oxalate fruits Ovaltine Soy drinks Dairy Chocolate milk Soy cheese Soy milk Soy yogurt Fats, nuts, and seeds Nuts Nut butters Sesame seeds Tahini Soy nuts Meat None Starches Amaranth Buckwheat Cereal (bran or high fiber) Crisp bread (rye or wheat) Fruit cake Grits Pretzels Taro Wheat bran Wheat germ Whole wheat bread Whole wheat flour Fruit Blackberries Blueberries Carambola Concord grapes Currents Dewberries Elderberries Figs Fruit cocktail Gooseberry Kiwis Lemon peel Lime peel Orange peel Raspberries Rhubarb Canned strawberries Tamarillo Tangerines Vegetables Beans (baked, green, dried, kidney) Beets Beet greens Beet root Carrots Celery Chicory Collards Dandelion greens Eggplant Escarole Kale Leeks Okra Olives Parsley Peppers (chili and green) Pokeweed Potatoes (baked, boiled, fried) Rutabaga Spinach Summer squash Sweet potato Swiss chard Zucchini Condiments Black pepper (more than 1 tsp.) Marmalade Soy sauce Miscellaneous Chocolate Parsley For more help and information on a low-oxalate diet, contact UPMC Nutrition Services.