Can I still eat Chinese yam (Dioscorea opposita) after it has sprouted?

Generally speaking, sprouted Chinese yam (Tiegun Shan Yao) should not be consumed. The detailed explanation is as follows:

Chinese yam usually sprouts due to suitable temperature and humidity conditions during storage. This also indicates the yam has spoiled, typically turning black or dark red, and may also show signs of slight mold. It is not recommended for consumption. Eating such yam may lead to food poisoning, causing gastrointestinal symptoms such as nausea, vomiting, diarrhea, and abdominal pain. In severe cases, poisoning symptoms such as fever and headache may occur.

To prevent Chinese yam from sprouting, it is recommended to store it in a cool, dry place, avoiding moisture and direct sunlight. Additionally, do not store the yam for extended periods; consume it while fresh. If long-term storage is necessary, consider drying the yam and wrapping it with tissue paper before storing it in a well-ventilated area at room temperature to prolong its edible shelf life.