Walnuts are a wonderful snacking and cooking nut that hold a lot of value in Traditional Chinese Medicine Nutrition. The temperature of the nut is warming, and its flavor is sweet. It helps the Kidneys and Lungs. Walnuts boost the Yang of the body, the Qi, and the Jing. Walnuts counteract cold and resolve phlegm. There are teachings that correlate the look of a food to what they help, and many say that walnuts resemble the look of the brain, with a left and right hemisphere, or section. Therefore the food walnut must help strengthen the brain and thinking.