Green beans cannot be eaten raw. Raw green beans contain a deadly toxin called saponin. If the green beans are not cooked, saponin will strongly irritate the digestive tract, and the lectin contained in raw green beans has a clotting effect.

In addition, raw kidney beans also contain nitrite and trypsin, which can stimulate the human gastrointestinal tract, cause food poisoning, and cause symptoms of gastroenteritis. To prevent kidney bean poisoning, be sure to cook the kidney beans thoroughly and thoroughly.