1. Yam has a sweet and mild taste and enters the liver, spleen and kidney meridians. So from this perspective, yam can nourish the kidneys. At the same time, yam is white in color and has a good tonic effect on lung qi. Yam itself can also be used as a kind of food. Its nature is dense, tasteless and non-irritating. Therefore, after taking yam, it also has a good health care effect on the spleen and stomach.

2. Yams can nourish the kidneys. But its pharmacological effects are not limited to nourishing the kidneys. In clinical practice, if you want to use yam to nourish kidney yin or kidney yang, it must be used in combination with other drugs. Commonly used prescriptions include Liuwei Dihuang Pills and Fugui Bawei Pills.