1, the nutritional value of yam is to provide a variety of amino acids, glucose, ions and so on; Its effects include invigorating spleen, nourishing stomach, promoting fluid production, benefiting lung, tonifying kidney and astringing essence.

2. From the nutritional point of view, yam contains glycoprotein, which can be hydrolyzed by the body to obtain various amino acids such as lysine, histidine, arginine and tryptophan, as well as saccharides such as glucose and galactose and various chemical components such as iron oxide, calcium oxide and potassium oxide, which can supplement the above nutrients for the human body and is beneficial to health.

3. From the point of view of traditional Chinese medicine, yam can be used as a Chinese herbal medicine, with sweet taste and flat nature. It belongs to spleen meridian, lung meridian and kidney meridian, and has the effects of invigorating spleen, nourishing stomach, promoting fluid production, benefiting lung, tonifying kidney and astringent essence. It can be taken in decoction or mashed for external application, and can be used to treat spleen deficiency diarrhea, lung deficiency cough, nocturnal emission and other syndromes.