Walnut, also known as walnut, ranks as the world's four largest dried fruits alongside almonds, cashews and hazelnuts in the international market. Its footprints are almost all over the world, mainly in America, Europe and many parts of Asia. Its output is in addition to the United States, that is, China. Walnut is called "Hercules food", "Nut with rich nutrition" and "fruit with intelligence" abroad. In China, it enjoys the reputation of "Long live the child", "longevity fruit" and "treasure for nurturing people". Its outstanding brain-nourishing effect and rich nutritional value are praised by more and more people. Walnut belongs to the dried fruit of deciduous trees in Juglandaceae. Walnut has a long history of cultivation in China. In the Natural History written by Zhang Hua in the 3rd century BC, it was recorded that "Zhang Qian went to the Western Regions to retrieve walnut seeds". Walnut's hometown is Iran in the west of Asia, and it was introduced to China when Korea and Zhang Qian went to the Western Regions. Today, walnuts are distributed all over China. For a long time, the working people in China have carefully cultivated many new varieties of high-quality walnuts by using the common and wild walnut resources in China. If classified by origin, there are Chencang walnut and Yangping walnut; According to maturity classification, there are summer walnuts and autumn walnuts; According to the smoothness of the shell, there are light walnuts and hemp walnuts; According to the thickness of the shell, there are thin-shell walnuts and thick-shell walnuts. There are many excellent varieties of walnuts in all parts of China, such as "Shimen Walnut" in Hebei, which is characterized by fine grains, thin skin and sweet taste. The kernel yield is about 50% and the oil yield is as high as 75%, so it has the reputation of "Shimen Walnut is famous all over the world". The paper walnut in Kuqa, Xinjiang, is called Kekeyi by Uighurs, which means the shell is thin and the oil content reaches 75%. This variety bears fruit quickly, and the masses described it as "one year old, two years old and three years old." Walnuts in Fenyang, Xiaoyi and other places in Shanxi are famous for their thin skin, full kernel and tender meat. The walnut skin in Qinling area of Shaanxi Province is as thin as an egg shell, commonly known as "egg-skinned walnut". The best variety "Mian Walnut" has thin skin and thick flesh. Hold two walnuts in your hand, and with a little force, the skin of the walnuts will be broken. In addition, the small walnuts produced in Hangzhou are also very popular with southerners. There is no harm. Walnut has high medicinal value and is widely used in traditional Chinese medicine. Chinese medicine believes that walnuts are warm, sweet and non-toxic, and have the effects of invigorating the stomach, enriching the blood, moistening the lungs and nourishing the mind. "Shen Nong Ben Cao Jing" lists walnuts as the top grade for long-term service, benefiting qi and prolonging life. In the Herbal Medicine of Dietotherapy written by Meng E in Tang Dynasty, it is recorded that eating walnut kernel can increase appetite, moisten blood vessels and make flesh and blood delicate. In the Song Dynasty, Liu Han and others recorded in Kaibao Materia Medica that eating walnut kernel can make it fat and healthy, moisten muscles, blacken hair and beard, and eat more can induce diuresis and remove five hemorrhoids. Li Shizhen in Ming Dynasty recorded in Compendium of Materia Medica that walnut kernel has the effects of invigorating qi and nourishing blood, moistening dryness and resolving phlegm, benefiting life, treating triple energizer, warming lung and moistening intestine, treating deficiency cold, asthma, cough, severe pain in waist and feet, hernia in heart, bloody dysentery and intestinal wind. Modern medical research believes that phospholipids in walnuts have a good health care effect on brain nerves. Walnut oil contains unsaturated fatty acids, which can prevent and treat arteriosclerosis. Walnut kernel contains zinc, manganese, chromium and other indispensable trace elements. The contents of zinc and manganese are decreasing in the process of aging, and chromium can promote glucose utilization, cholesterol metabolism and protect cardiovascular system. The effect of walnut kernel on relieving cough and asthma is also very obvious. Winter has excellent curative effect on patients with chronic bronchitis and asthma. It can be seen that eating walnuts regularly can not only strengthen the body, but also resist aging. Some people often take tonics. In fact, it is really good to eat a few walnuts every morning and evening, which is often better than taking tonic. Walnuts are a good diet. Whether it is used for dispensing medicine, raw, boiled, dipped in sugar or cooked, it has good effects of enriching blood and benefiting qi, tonifying kidney and replenishing essence, relieving cough and asthma, moistening dryness and relaxing bowels. There are many ways to eat walnuts. Boiling walnuts with proper salt water and eating dregs can cure lumbago due to kidney deficiency, nocturnal emission, impotence, forgetfulness, tinnitus and frequent urination. Cooking porridge with walnuts, coix seed and chestnuts can cure frequent urination, nocturnal emission, loose stool and diarrhea. Eating walnuts, sesame seeds and lotus seeds dipped in sugar can nourish the heart and brain and cure night sweats. Eating raw walnuts, longan pulp and hawthorn can improve heart function. Walnut is also widely used to treat neurasthenia, hypertension, coronary heart disease, emphysema and stomachache. Walnut, native to the Near East, is also known as walnut and peach, and is also known as the four world-famous dried fruits together with almond, cashew nut and hazelnut. It can be eaten raw or fried, and can also be used to extract oil and make cakes and sweets. It is not only delicious, but also has high nutritional value. It is known as "Long live the child" and "longevity fruit". In western European countries, it is also a holiday food for some traditional festivals such as Christmas. Another kind of hickory, also called wild walnut, is a native product of China, Zhejiang and Hangzhou, and its nutrition is basically the same as that of walnut. ≮ Efficacy ≯ Walnut is rich in vitamins B and E, which can prevent cell aging, strengthen brain, enhance memory and delay aging. It contains special vitamins, which will not only increase cholesterol, but also reduce the absorption of cholesterol in the intestine, so it is very suitable for people with arteriosclerosis, hypertension and coronary heart disease. Walnut kernel contains a lot of vitamin E and linolenic acid, which is an ideal skin care agent for human body. Regular consumption has the effect of moistening skin and blackening hair. Chewing some walnuts when you feel tired can relieve fatigue and stress. Walnut can also tonify kidney, solidify essence, moisten intestines and relax bowels, and strengthen the body. ≮ Suitable crowd ≯ Everyone can eat it. Walnut has high medicinal value. "Compendium of Materia Medica" records that walnuts are sweet in taste and flat in nature, and can tonify qi and blood, regulate dryness and eliminate phlegm, warm kidney and lung, and relieve asthma. Eating walnuts regularly can nourish blood vessels, stimulate appetite, blacken hair and beard, and treat sexual dysfunction, neurasthenia, memory loss and other diseases. Therefore, there is a saying among the people that eating walnut oil often makes a white-haired old man play with yak. Peach food has nourishing and health care functions, and is suitable for all ages. Eating more for pregnant women is beneficial to the skeletal development of the fetus. Regular consumption by children is beneficial to growth and development, enhancing memory and protecting eyesight; Young people often eat it to make their bodies healthy and their skin smooth; Middle-aged and elderly people often eat it, which can protect the heart and moisten the lungs, improve intelligence and prolong life. Studies have confirmed that walnuts have obvious effects in the following aspects: strengthening the brain and preventing diseases. The linoleic acid, linolenic acid and various trace elements contained in walnuts are good sources of structured fat in brain tissues and cells. Sufficient linoleic acid and linolenic acid can eliminate impurities produced by metabolism in blood vessel wall, purify blood and provide fresh blood for the brain, thus improving the physiological function of the brain. If people can eat walnut food regularly, they can lower their blood cholesterol. At the same time, walnuts are also rich in minerals such as calcium, phosphorus, iron, potassium, magnesium, zinc, manganese and various vitamins. Regular consumption not only has the function of strengthening the brain, but also prevents hypertension and cardiovascular and cerebrovascular diseases. Meng Xi, a famous doctor in the Tang Dynasty, said that walnuts can dredge channels and collaterals, moisten blood vessels, and make the skin delicate and smooth. This is because walnuts are rich in various special nutrients, which can be easily digested and absorbed by the human body, enhance cell vitality, enhance the body's disease resistance and prolong life. At the same time, vitamin E rich in walnuts can improve the physiological activity of human skin and contribute to beauty. ≮ Efficacy ≯ Walnut is rich in vitamins B and E, which can prevent cell aging, strengthen brain, enhance memory and delay aging. It contains special vitamins, which will not only increase cholesterol, but also reduce the absorption of cholesterol in the intestine, so it is very suitable for people with arteriosclerosis, hypertension and coronary heart disease. Walnut kernel contains a lot of vitamin E and linolenic acid, which is an ideal skin care agent for human body. Regular consumption has the effect of moistening skin and blackening hair. Chewing some walnuts when you feel tired can relieve fatigue and stress. Walnut can also tonify kidney, solidify essence, moisten intestines and relax bowels, and strengthen the body. ≮ Suitable crowd ≯ Everyone can eat it. ≮ Dosage ≯ 20g each time. ≮ Special note ≯ Because it contains more fat, eating too much at a time will affect digestion. Some people like to peel off the thin brown skin on the surface of walnut kernel, which will lose some nutrients, so don't peel off this thin skin. Walnut, the nutritional component of walnut, is one of the heart-strengthening foods recommended by Dr. Morrison, a contemporary natural therapist. According to the determination, every 100g of walnut contains 20-64g of fat, 7 1% of the fat in walnut is linoleic acid, 12% is linolenic acid, protein is 15-20g, and protein is also a high-quality protein. The fat and protein in walnuts are the best nutrients for the brain. Sugar is 10g, and contains calcium, phosphorus, iron, carotene, riboflavin, vitamin B6, vitamin E, juglone, phospholipid, tannin and other nutrients. The health care function of walnuts-linoleic acid, glyceride and linolenic acid in walnuts can reduce the absorption of intestinal cholesterol, promote the degradation of cholesterol into bile acids in the liver, and excrete it with bile, which is beneficial to people with arteriosclerosis, hypertension and coronary heart disease. Vitamin B6 in walnuts can help the damaged heart regenerate. Folic acid in walnuts also helps to maintain myocardial metabolism; Bone-supplementing acetic acid in walnut can dilate coronary artery, excite heart and enhance myocardial function; Treat insomnia and neurasthenia. Walnut is rich in phospholipids, which is one of the main components of cell structure. Adequate phospholipids can enhance cell vitality and play an important role in hematopoiesis, promoting skin fineness, wound healing and hair growth. Walnut contains a lot of zinc, manganese, chromium and so on. Trace elements such as zinc, manganese and chromium are indispensable to human body, and zinc and manganese are the key components of endocrine glands such as pituitary gland, pancreas and gonad. More importantly, walnuts can delay the aging of brain nerves, which is a good product for improving intelligence, strengthening the brain and strengthening the body. As early as the Sui and Tang Dynasties, in order to get good results in the imperial examinations, people had to eat a lot of walnuts before taking the examinations. At that time, they only knew its function, not its principle. In fact, it is because walnuts contain lecithin, vitamins and trace elements. Some people call walnuts "the God of Brain". The beauty effects of walnuts-whitening skin and nourishing hair-have been demonstrated since ancient times. In addition, walnuts enhance the strength of feet and waist, which is especially suitable for postpartum women to recover their physical strength and refresh their minds. The medicinal value of walnut-walnut is warm, sweet and non-toxic. It has the effects of invigorating stomach, enriching blood, moistening lung and nourishing spirit, and is a good fruit of dietotherapy. Walnut contains a lot of fat and protein, which are easily absorbed by human body. 1 kg walnut kernel is equivalent to the nutritional value of 5 kg eggs or 9 kg milk. Protein contained in it contains lysine, which is extremely important to human body, and is extremely beneficial to the nutrition of cranial nerves. Whether you are healthy or not, eating walnuts regularly can not only strengthen your body, but also drive away the troubles of diseases.