Eating walnuts in moderation will not cause elevated cholesterol. Walnuts are a very nutritious and medicinal value of nuts, walnut kernels have a variety of unsaturated fatty acids, can effectively prevent atherosclerosis, the prevention of cardiovascular disease. In addition, walnuts are rich in protein, phospholipids, essential unsaturated fatty acids and vitamin E, which are very good for nourishing brain cells, enhancing brain function, scavenging oxygen free radicals and slowing down the effects of aging. As walnuts are rich in nutrients, they belong to the kidney, lung and large intestine, and have the function of warming the lungs and kidneys, strengthening the waist and knees, moistening and laxative, so in order to strengthen the body and brain can eat walnuts, but can not eat more, more may cause weight gain, and even cholesterol.