Can't eat together. Reason: Crab is rich in high-quality protein, while grapefruit contains a lot of acidic components. These nutrients will interact with each other, resulting in precipitation and denaturation of protein, which makes it difficult for human body to digest and absorb, and will also cause great stimulation to the stomach, which is easy to cause gastrointestinal discomfort, such as nausea, vomiting, abdominal pain and diarrhea. Besides, grapefruit and crabs are both cold, so you should not eat cold grapefruit when eating crabs, which will aggravate the body's cold gas and lead to physical discomfort.

1, cold drinks Never eat cold drinks after eating crabs, because cold drinks, ice cream and other foods are cold things, which will lower the temperature of the stomach. If you eat with crabs, it will definitely lead to diarrhea. So don't eat with crabs, and you can't eat cold drinks immediately after eating crabs.

2, cantaloupe cantaloupe is melon, sweet and cold and smooth, can remove heat and relieve constipation. Eating with crabs is harmful to the stomach and easy to cause diarrhea. In addition, crabs should not be eaten with sweet potatoes, pumpkins, honey, oranges, pomegranates, tomatoes, snails, celery, rabbit meat, Schizonepeta and eggplant, which will lead to food poisoning. Precautions for eating crabs: 1, crabs should be steamed and eaten now, but not stored. Crabs must be steamed and eaten now, and cannot be stored. If they can't finish eating, the rest must be stored in a clean, cool and ventilated place, and must be cooked and steamed thoroughly when eating. 2. Dead crabs should not be eaten. After death, the rigidity period and autolysis period of river crabs are greatly shortened. Bacteria in crabs will multiply rapidly and spread to crab meat, causing vomiting, abdominal pain and diarrhea.