Nicknames: Yam, Yam, Yam, Yam, Yam, Yuyan.

Smell: (root) sweet, warm, flat and nontoxic.

Yam, commonly known as yam. Perennial herb with creeping stems, usually purplish, cylindrical roots, opposite leaves, oval or oval flowers, and dioecious. Root tuber contains starch and protein, which is edible. Yam is sweet and flat, and can be eaten in lung, spleen and kidney meridians. It is not dry or greasy, and has the effects of invigorating spleen and lung, invigorating stomach and kidney, strengthening kidney and essence, improving hearing and eyesight, helping five internal organs, strengthening bones and muscles, calming nerves and prolonging life; Medically, it is mainly used for treating spleen and stomach weakness, mental fatigue, loss of appetite, chronic diarrhea, lung qi deficiency and dryness, cough with excessive phlegm, kidney qi deficiency, soreness of waist and knees, weakness of lower limbs, thirst and frequent urination, nocturnal emission and premature ejaculation, increased leucorrhea, skin redness and swelling, obesity and other symptoms. Compendium of Materia Medica summarizes five effects: benefiting kidney qi, strengthening spleen and stomach, stopping diarrhea, resolving phlegm and promoting fluid production, and moistening skin. It is effective for chronic diseases such as poor health, enteritis, kidney deficiency, etc.

1. Spleen and stomach

Yam contains amylase, polyphenol oxidase and other substances, which is beneficial to the digestion and absorption function of the spleen and stomach. Blindly nourishing the spleen and stomach is a dual-purpose product of medicine and food. Both spleen yang deficiency and stomach yin deficiency can be eaten. Clinically, it is often used to treat spleen and stomach weakness, anorexia, fatigue, diarrhea and other diseases;

2. Nourishing kidney and essence

Yam contains a variety of nutrients, which can strengthen the body, tonify the kidney and replenish essence? The role of. Generally, it is kidney deficiency, nocturnal emission, frequent urination and other symptoms. Can be taken;

Step 3: benefit lung and relieve cough

Yam contains saponin and mucus, which can lubricate and moisten dryness, so it can benefit lung qi, nourish lung yin, and treat lung deficiency, excessive phlegm and chronic cough.

reduce the blood sugar

Yam contains mucin, which has the function of lowering blood sugar and can be used to treat diabetes. It is a good diet for diabetics.

Prolong life

Yam contains a lot of mucin, vitamins and trace elements, which can effectively prevent the deposition of blood lipids on the blood vessel wall, prevent heart disease, and achieve the effects of benefiting the heart, calming the nerves and prolonging life.

6. Anti-hepatic coma

It is found that yam has sedative effect and can be used to resist hepatic coma. 1. Suitable for patients with diabetes, abdominal distension, physical weakness after illness, chronic nephritis and long-term diarrhea;

2. Yam has astringent effect, and people with dry stools should not eat it; In addition, evil spirits should not eat yam. 1. yam should be soaked in salt water immediately after slicing to prevent oxidation and blackening.

2. When fresh yam is cut, it will have mucus, which is easy to slip and hurt your hands. You can wash it with water and a little vinegar first, which can reduce mucus.

3. Yam is delicate in texture and sweet in taste. However, the skin of yam is easy to cause skin allergy, so it is best to peel it, and don't touch it with your hands after peeling it. Wash your hands several times at once, or you will scratch.

4. Good yam skin is harmless, with mucus, white fault, more mucus and less water. The skin can be fried or dried to make soup or porridge. Peel and eat to avoid abnormal taste such as tingling.

5. Fresh yam is mostly used for fatigue cough and diabetes, and fried cooked food is used to treat spleen and stomach and kidney deficiency.