1, taboo 1: carrots, cucumbers and pumpkins. Yam is rich in vitamin C, and carrots, cucumbers and pumpkins are rich in vitamin C-decomposing enzymes. If you eat them together, the vitamin C in yam will be broken down and destroyed.

2, taboo 2: pig liver. Pig liver contains trace elements such as copper, iron and zinc, and yam is rich in vitamin C. When vitamin C meets metal ions, it will be destroyed by accelerated oxidation.

3, taboo 3: alkaline food or medicine. Yam is rich in amylase, and alkaline components will make amylase ineffective, thus reducing the nutritional value of yam.

4, taboo 4: shrimp. Yam and shrimp are similar foods. If eaten together, it will cause nausea, vomiting, abdominal pain and other symptoms.

5, taboo five: venison. Yam can't bring venison. Both yam and venison are raw. Eating yam and venison together is raw and easy to constipation.

6. Taboo 6: Fish. Yam and fish cannot be eaten together, including carp and crucian carp. Eating together will cause nausea, vomiting and abdominal pain.

7. Taboo 7: Gansui, yam is a food that tonifies the kidney, strengthens the spleen and moistens the lungs, while Gansui's strict discharge of water will stimulate the intestines, increase the peristalsis of singing and have the effect of stopping diarrhea. The two have opposite effects. Eating together can cause physical discomfort, nausea, vomiting, abdominal pain and so on.