Walnut: Walnut is sweet and warm, and has the effects of tonifying kidney, solidifying essence, warming lung, relieving asthma and moistening intestine. Indications are kidney deficiency, asthma, low back pain, weak feet, impotence, nocturnal emission, frequent urination, stranguria, dry stool and other symptoms. Walnut is rich in nutrition, which is very suitable for neurasthenia, physical weakness, coronary heart disease, hypertension and mental workers. Walnut is rich in vitamin E, which can delay aging.

2. Hazelnut: Hazelnut has the effects of nourishing the spleen and stomach, benefiting qi and improving eyesight, and is beneficial for preventing and treating lung and kidney deficiency such as diabetes and nocturnal urination. It is suitable for poor appetite, fatigue, emaciation, physical weakness after illness, and unclear vision. Because hazelnut contains unsaturated fatty acids that the human body can't synthesize by itself, it can promote cholesterol metabolism and soften blood vessels, thus preventing and treating cardiovascular and cerebrovascular diseases such as hypertension and arteriosclerosis.

3. Chestnut: The effect of chestnut on improving male sexual function is mainly manifested in tonifying kidney. Traditional Chinese medicine believes that chestnuts are sweet and warm, and have the effects of nourishing the stomach, strengthening the spleen, tonifying the kidney and strengthening tendons, etc., especially suitable for people with weak waist and knees, lumbocrural paralysis, frequent urination and spleen deficiency and cold caused by kidney deficiency. In the Tang Dynasty, Sun Simiao, a medical scientist, said chestnuts were "the fruit of kidney".

4. Cashew nuts: Cashew nuts have the functions of nourishing the brain, tonifying the kidney and strengthening the spleen. Cashews, which are rich in energy, also have the effects of promoting blood circulation and improving erectile function. Regular consumption of cashews is more helpful to improve disease resistance and sexual desire.