Walnuts as a nut food, contains a variety of nutrients, which is rich in unsaturated fatty acids, as well as other nutrients, the body has certain benefits, but if consumed in an improper manner or too much may cause certain effects on the human body. A. Benefits: 1. Western medicine perspective: can play a certain role in protecting blood vessels, to reduce blood lipids, blood pressure has certain benefits; 2. Chinese medicine perspective: Chinese medicine believes that walnuts in water decoction or into the pill, can improve the waist and knee weakness, sweating and coughing, constipation and other problems have a certain effect. However, it needs to be taken together with other drugs, and the walnut kernel needs to be concocted in order to be included in the medicine and play a certain effect. Second, the disadvantages: 1, plus the risk of obesity increased: because walnuts are rich in fat, a high energy density food, excessive consumption increases the intake of a large number of calories, there is an increased risk of obesity; 2, aggravate certain diseases: for some people special groups, although a small amount of walnuts do not have too much impact, but if over-eating may cause disease symptoms aggravated, may aggravate the gastrointestinal tract, pancreatic-biliary burden, such as cholecystitis, The people with gallstones and abnormal digestive function should not eat a lot of them. In addition, most people believe that eating walnuts has a certain effect on brain health because they contain antioxidants as well as linolenic acid and phospholipids, but these two substances are not the only ones contained in walnuts, and the content of both in walnuts is not enough to achieve the purpose of brain health, so it is not recommended to eat a lot of walnuts.