Nutrition and Kidney Stones People who suffer from recurrent episodes of kidney stones should pay attention to their diet. Traditionally, doctors advise people with a history of oxalate calcium stones in the kidneys to avoid oxalate-rich foods, including spinach, rhubarb, ground corn, baked potatoes, French fries, and sweet potatoes. According to a 2014 study, "the most effective dietary approach to preventing kidney stones is a moderate restriction of animal protein intake, a balanced intake of carbohydrates and fats, and a high intake of fruits and vegetables." A low-sodium diet should also be considered, as it may protect against kidney stones. A 2020 study concluded that a vegetarian diet containing dairy products is the most effective diet that provides the best protection for people suffering from kidney stones. Another study from 2020 concluded that a Mediterranean diet may also benefit from this. A 2002 study found that a low-carb diet, also known as a ketogenic diet, may increase the risk of kidney stones. For people who adhere to a ketogenic diet or are considering such a diet, it is advisable to weigh the risks against the benefits. I have personally seen hundreds of patients who adhere to a ketogenic diet, and none of them have developed kidney stones.
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