“Black foods can nourish the kidneys, supplement kidney qi, and benefit kidney energy. Black foods generally contain rich trace elements and vitamins.

In spring, eating "Seven Black" black foods is recommended for kidney nourishment. Black rice contains abundant protein, amino acids, iron, calcium, manganese, zinc and other trace elements, with the effects of appetizing, nourishing the stomach, supplementing essence, invigorating the spleen and warming the liver, and promoting blood circulation and relieving muscle tension. Black rice and purple rice are precious varieties of rice and belong to the glutinous rice category.

Black rice has the effects of nourishing yin and tonifying the kidneys, invigorating the spleen and warming the liver, nourishing the spleen and stomach, replenishing qi and promoting blood circulation, and nourishing the liver and improving eyesight. It can be used as medicine and diet, and is particularly effective for dizziness, night blindness, tinnitus, anemia, and gray hair. Long-term consumption can promote longevity.

Black rice is commonly referred to as "medicinal rice" and "longevity rice." It is most suitable for replenishing blood in pregnant and postpartum women, also known as "monthly rice" and "blood-supplementing rice." Due to the fact that the nutrients in black rice are concentrated in the black outer layer, it is not suitable for refined processing.

Black rice has the effects of nourishing yin and tonifying the kidneys, invigorating the spleen and warming the liver, nourishing the spleen and stomach, replenishing qi and promoting blood circulation, and nourishing the liver and improving eyesight. Regular consumption of black rice is beneficial for preventing and treating dizziness, blurred vision, anemia, gray hair, eye diseases, lumbar and knee soreness, dry cough, constipation, urinary difficulties, kidney deficiency edema, poor appetite, and weak spleen and stomach.

Chestnuts have a sweet and warm nature, with the effects of nourishing the stomach, invigorating the spleen, tonifying the kidneys, and promoting blood circulation and stopping bleeding, especially suitable for those with lumbar and knee soreness and frequent urination due to kidney deficiency, as well as those with spleen and kidney deficiency cold. Chestnuts are rich in riboflavin, making them a good choice for people troubled by mouth ulcers. Chestnuts are a dried fruit variety with a higher carbohydrate content, providing more energy and are more suitable for consumption in autumn and winter. The unsaturated fatty acids, various vitamins, and minerals in chestnuts have good preventive and therapeutic effects on diseases such as hypertension, coronary heart disease, arteriosclerosis, and osteoporosis.

In addition to being cooked, chestnuts can also be eaten raw, and raw chestnuts have a better kidney-nourishing effect. If middle-aged and elderly people develop the habit of eating dried raw chestnuts every day, it can effectively prevent and treat kidney deficiency, lumbago, and leg pain.

Eating too many raw chestnuts is difficult to digest, while eating too many cooked chestnuts can cause gastrointestinal obstruction. In general, it is advisable to eat 5-10 chestnuts per day, especially for children, who have relatively poor digestive abilities and should not eat too many. Since chestnuts have a high sugar content, diabetics should also avoid consuming chestnuts as much as possible.

Black fungus has a sweet and mild nature, with the effects of nourishing qi and kidneys, cooling blood and stopping bleeding. It is often used clinically to treat menstrual irregularities, hemorrhoids, bleeding, high blood pressure, arteriosclerosis, physical deficiency, and constipation. Modern medical experiments have shown that it has the function of reducing blood clots, which is beneficial for patients with cerebrovascular and cardiovascular diseases.

Black fungus contains protein, fat, sugar, calcium, phosphorus, iron, and carotene, vitamin B1, vitamin B2, and other nutrients. Among them, the iron content is particularly rich, 20 times higher than the celery with the highest iron content among leafy vegetables, and nearly 7 times higher than the pig liver with the highest iron content among animal products, so it is praised as the "iron champion" of food. It also contains a plant gum, which is a particularly beneficial natural supplement to the human body.

Black fungus can be fried, braised, and stewed in cooking, and can be used as a main ingredient in dishes or as an ingredient in soups such as winter melon soup and chicken soup.

Black beans have a sweet and neutral nature, and not only are they kidney-shaped, but they also have the effects of nourishing the kidneys, invigorating the blood and promoting urination, detoxifying, and moistening the skin, especially suitable for those with kidney deficiency. Black jujube, known as the "nutrient warehouse," has a warming and sweet taste, and has the functions of invigorating the spleen, replenishing qi, nourishing the stomach and promoting blood circulation.

Black beans have a protein content as high as 36%-40%, which is equivalent to twice that of meat, three times that of eggs, and twelve times that of milk. Black beans contain 18 amino acids, especially the essential eight amino acids for the human body. Black beans also contain 19 types of oleic acid, with unsaturated fatty acid content reaching 80% and an absorption rate of over 95%, not only meeting the body's need for fat but also reducing the cholesterol content in the blood. Therefore, frequent consumption of black beans can soften blood vessels, moisturize the skin, and slow down aging, particularly beneficial for patients with hypertension or heart disease.

Black beans have a neutral nature and sweet taste, entering the spleen and kidney meridians, with the functions of reducing swelling and relieving gas, moistening the lungs, activating blood and promoting urination, dispelling wind and eliminating bi, nourishing blood and calming the spirit, improving vision, nourishing the spleen and kidneys, and detoxifying. It is used for edema, wind-damp swelling, jaundice and edema, wind-cold arthralgia, postpartum wind pain, trismus, carbuncle swelling and toxicosis, can counteract drug toxicity, restrain wind-heat and stop night sweats, and is beneficial for darkening hair and prolonging life.

Black sesame has a neutral nature and sweet taste, with the functions of nourishing the liver and kidneys and moistening the five viscera, and is particularly effective for dizziness, premature graying of the hair, hair loss, lumbago and knee weakness, intestinal dryness and constipation caused by insufficient liver and kidney essence. Black sesame contains multiple essential amino acids in the presence of vitamin E and vitamin B1, which can accelerate the body's metabolism; the iron and vitamin E contained in black sesame are important components for preventing anemia, activating brain cells, and eliminating vascular cholesterol. The majority of the fat in black sesame is unsaturated fatty acids, and it has the function of prolonging life.

Black sesame has the functions of nourishing the liver and kidneys, moistening the five viscera, invigorating qi and strengthening the muscles, nourishing the brain and marrow, and can be used to treat dizziness, premature graying of the hair, hair loss, lumbago and knee weakness, limb weakness, difficulty in walking, internal damage, dry and withered skin, and intestinal dryness and constipation caused by liver and kidney essence deficiency, and is especially effective in blackening hair and beautifying the face.

Preserved black dates are dried jujube products, with stronger nourishing and replenishing effects than fresh jujubes, and compared to red dates, they have a stronger blood-nourishing and replenishing effect. Black dates contain abundant vitamins and have a very strong effect in enhancing the body's immune function, and have obvious therapeutic effects on esophageal cancer, lung cancer, and hematemesis.

Black dates have a sweet and warm nature, can nourish the liver and kidneys, and moisturize dryness and generate fluids. The greatest nutritional value of black dates lies in their rich dietary fiber and pectin, which can help digestion and promote soft stools. Black dates are rich in nutrients, containing protein, fat, carbohydrates, and various vitamins, with the highest content of vitamin C and calcium and iron in particular.

Black dates have great medicinal value and are often used to tonify the blood and as a medicinal remedy, with certain effects on anemia, thrombocytopenia, hepatitis, fatigue, and insomnia. Black dates have the effect of enhancing blood supplementation.

Note: When eating, don't eat too much at once, and moderation will avoid side effects.

Walnuts have the effects of tonifying the kidneys and consolidating essence, promoting diuresis and dispersing stones, moistening the intestines and relieving constipation, and warming the lungs to relieve asthma, and are commonly used for kidney deficiency, lumbago, and urinary tract stones. When these five foods are cooked together into porridge, it is an excellent kidney-nourishing product.

In addition, black fungus, plums, black-bone chicken, black plums, seaweed, chestnuts, sea cucumbers, shiitake mushrooms, and kelp are also very nutritious foods. People with poor kidney function can eat a scallion-braised sea cucumber once a week, stir-fry black fungus and shiitake mushrooms together, or add chestnuts when stewing meat, all of which are good methods for nourishing the kidneys."