1, Jiannao Yizhi: Walnut is rich in linoleic acid glyceride, which can provide matrix for the brain. In addition, trace elements such as zinc and manganese contained in walnuts are important components of pituitary gland in the brain. Regular consumption of walnuts helps to supplement the nutrients needed by the brain and plays a role in strengthening the brain and improving intelligence. ?

2. beauty beauty: Walnuts are rich in nutrition. Eating walnuts often helps to nourish the skin and make it white, tender and smooth. Especially for the elderly, skin elasticity is weakened due to the increase of age, and skin aging problems such as wrinkles appear. Eating walnuts helps to enhance skin elasticity, beauty beauty. ?

3. Anti-aging: Walnut is rich in vitamin E and is recognized as an anti-aging substance in the medical field. It can eliminate free radicals in the body, help body cells avoid free radical damage, and maintain cell vitality. ?

4, anti-constipation: eating walnuts often helps to relieve constipation and prevent constipation. Walnut is rich in walnut oil and crude fiber, which can help to lubricate the intestines, soften stools and promote intestinal peristalsis, thus achieving the purpose of preventing constipation.

5. Lowering blood sugar: The large amount of unsaturated fatty acids contained in walnuts can also effectively reduce the body's resistance to insulin, and at the same time reduce the risk of type 2 diabetes. Eating walnuts regularly can effectively help reduce the body's blood sugar content. ?

6. Disease prevention: Walnut also contains a lot of unsaturated fatty acids such as linoleic acid and linolenic acid, which helps to purify blood, reduce cholesterol content in blood and effectively prevent cardiovascular and cerebrovascular diseases. In addition, people with physical weakness, malnutrition, neurasthenia and arteriosclerosis after illness can eat walnuts to promote their health recovery. ?

7. Help sleep: Walnuts contain a considerable amount of melatonin, which can help people sleep. Melatonin is a hormone that can help regulate people's sleep. At night, it secretes more to help people fall asleep. Eating walnuts can promote melatonin secretion and help improve sleep.

Second, the disadvantages of eating walnuts:

1. Walnut is a high-fat food. If you eat too much at one time, it will easily lead to indigestion. In addition, because walnuts contain a lot of fat, if eaten in large quantities, they can't be fully utilized by the body, and it is easy to accumulate in the body, so people with hyperlipidemia and obesity must not eat too much at a time, otherwise it will increase the burden on the body.

Walnuts can't be eaten with pheasants and ducks. Walnuts contain more fat, so eating more will affect digestion, and it is not advisable to eat too much at one time. In addition, in order to preserve nutrition, it is not advisable to peel off the thin brown skin on the surface of walnut kernel when eating. Eating too much will cause diarrhea. People with phlegm-fire asthma, cough, hyperactivity of fire due to yin deficiency and diarrhea due to loose stool are not suitable for eating.

Extended data

Walnut is rich in nutritional value, and has the reputation of "Long live the son", "longevity fruit" and "treasure of health preservation". 86% of the fat in walnuts is unsaturated fatty acid. Walnut is rich in copper, magnesium, potassium, vitamin B6, folic acid and vitamin B 1, and also contains fiber, phosphorus, nicotinic acid, iron, vitamin B2 and pantothenic acid. Every 50g walnut contains 3.6% water, 7.2g protein, 3 1g fat and 9.2g carbohydrate.

Walnut kernel looks like a miniature brain, and its folds are like cerebral cortex. People in China have a tradition of "supplementing shapes with shapes", so the saying that eating walnuts can replenish the brain has spread. Eating more for children can improve intelligence, while eating more for the elderly can prevent memory loss.

Baidu encyclopedia: walnut