Kidney deficiency is divided into kidney yang deficiency and kidney yin deficiency. The former is manifested by chills, backache, and edema, while the latter is manifested by heat intolerance, backache, night sweats, and dizziness. Dietary conditioning is an effective method to assist in the treatment of kidney deficiency. Recommended foods include fruits such as mulberries and grapes, vegetables such as leeks and yams, meats such as pork kidneys and mutton, seafood such as shrimps and oysters, nuts such as hazelnuts and walnuts, and black sesame seeds and black beans. Black foods, these foods help nourish the kidneys and improve symptoms of kidney deficiency.