1, people who are wet should avoid taking yam; Those who are evil should avoid taking yam; People with liver depression should not eat yam.

2. If the yam is not cooked or broken, it will cause side effects after ingestion, which may also cause poisoning.

3. Function: It is suitable for anorexia due to spleen deficiency, diarrhea due to spleen deficiency, asthma and cough due to lung deficiency, nocturnal emission due to kidney deficiency, thirst quenching due to deficiency heat, excessive leucorrhea and frequent urination.