Yam is sweet and flat, and enters the lung, spleen and kidney meridians; It is not dry and 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 the heart and calming the nerves, and prolonging life. It is mainly used for treating spleen and stomach weakness, mental fatigue, anorexia, chronic diarrhea, lung qi deficiency and dryness, excessive phlegm and asthma, cough, kidney qi deficiency, soreness of waist and knees, weakness of lower limbs, thirst and frequent urination, nocturnal emission and premature ejaculation. Fresh yam is mostly used for fatigue, cough and thirst, and fried cooked food is used to treat spleen and stomach and kidney deficiency.

(1) Spleen and stomach digestion.

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 with Weichang Decoction to treat spleen and stomach weakness, anorexia, fatigue, diarrhea and other symptoms.

(2) Nourishing kidney and essence

Yam contains a variety of nutrients, which has the functions of strengthening body, nourishing kidney and benefiting essence. Generally speaking, symptoms such as nocturnal emission due to kidney deficiency, leukorrhagia by women and frequent urination can be taken.

(3) benefiting lung and relieving 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.

(4) lowering blood sugar

Yam contains mucin, which can lower blood sugar. Can be used for treating diabetes, and is a good food for diabetic patients.

(5) prolong the service 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.