Can kidney calculi patients eat walnuts? It was recorded as early as the Tang Dynasty, and various medical theory books in recent years have also been explained. It is believed that pyruvate in walnut kernel can prevent mucin from combining with calcium ions, thus preventing the formation of stones. It has also been reported that walnut kernel can acidify urine to adjust pH value, so that magnesium ammonium phosphate stones and calcium oxalate stones cannot survive in acidic environment. Kidney calculi's method of discharging walnuts is introduced in the dictionary of traditional Chinese medicine: 4 taels of walnuts (1.20g), stir-fried with edible oil, mixed with appropriate amount of sugar and ground, and taken 12 days (children should take less). Generally, calculus can be discharged 1 time or multiple times within a few days after taking it. Actually, kidney calculi is just a sideline of walnut. The main functions of walnut are tonifying kidney, solidifying essence, warming lung and relieving asthma, and can treat cough due to kidney deficiency, weakness of waist and legs, constipation and so on. For people with chronic cough, the effect of walnuts is obvious. There is an interesting record: in ancient times, there was a doctor named Hongmai who had a cough and expectoration. He used 3 pieces of walnut kernel and 3 pieces of ginger, chewed them up before going to bed at night, swallowed them and lay in bed until the next morning, that is, the phlegm disappeared and the cough stopped. Need to be reminded that walnut kernel is best taken with skin to relieve cough and asthma. For people with benign prostatic hyperplasia, walnuts can also be cooked, chewed while lying down, and served with warm wine, which can improve the symptoms of frequent urination; Mashing walnuts, frying them to brown oil, and grinding them into paste for external application can treat dermatitis, eczema, furuncle of external auditory canal, etc. Walnut is not only useful for patients, but also a health product for healthy people: it can nourish liver and kidney, strengthen bones and muscles, and relieve backache and leg pain; It can strengthen teeth and nourish black hair and so on. Modern medicine also proves that walnuts are rich in fat, protein, carotene, vitamins, phosphorus, iron, magnesium and other special structures. According to some data, the nutritional value of 500 grams of walnuts is equal to 2500 grams of eggs, or 4750 grams of milk, or 1500 grams of pork, which can be called a nutritional bank. Lemon juice helps prevent kidney calculi: If kidney calculi patients are complaining about God, it is better to make a glass of lemon juice. The latest research shows that drinking lemon juice is an effective and delicious method, which can make people with kidney calculi tendency gradually produce new stones. So kidney calculi patients can eat walnuts.