Because crabs are cold in nature and rich in a lot of protein and high in cholesterol, some people are not suitable for eating crabs as they may cause abdominal pain, diarrhea, nausea and vomiting.

Crabs are omnivores, and their body surface, gills and gastrointestinal tract are full of bacteria and sludge, and may even have parasites. Therefore, patients suffering from diarrhea, stomach pain, chronic gastritis and other gastrointestinal diseases are not suitable for eating crabs, which may aggravate their condition. This is because crabs are rich in protein and crab yolk is high in cholesterol. If more crabs are eaten, it will increase the cholesterol level in the blood and worsen the condition. Crab is an allergy-prone food and can be considered a taboo for allergy sufferers, especially those who are allergic to seafood. Symptoms of crab allergy are mainly itching and blotchy skin, and in some cases, nausea and vomiting. Hepatitis patients with gastric mucous membrane edema, abnormal bile secretion, decreased digestive function, and more protein in the crab, not easy to digest and absorb, easy to cause indigestion, bloating, vomiting and so on. People with cold and fever should not eat. Crab protein and fat content is high, not suitable for digestion, cold and flu cold diet to light. After eating crabs, it is easy to make it difficult to cure or aggravate a cold.

For infants and young children, the organs in the body are in the "development" stage. Crab is a high-protein food, easy to increase the metabolic burden of the liver and kidneys. Infants and young children liver function is not strong, should not be eaten; In addition, infants and young children digestive ability is weak, crabs itself is cold food, should not be eaten. For crabs, they contain a lot of fat and cholesterol, especially the "crab yolk". Eating too much can increase the risk of cholecystitis, pancreatitis and other diseases, so it is recommended that people suffering from high blood pressure, coronary heart disease, inflammation of the gallbladder and other diseases try to eat as little as possible or do not eat; In addition, crabs contain a large number of purines, so do not eat them when you have a gouty attack; patients with gout in the "potential attack period" should eat them in limited quantities. Patients who are in the "potential attack period" of gout should "limit" their consumption. People with cardiovascular and arteriosclerosis should not consume it. Crab contains high cholesterol, eating crab at home can make you sick.

In short, patients with digestive diseases, high blood fat, high blood pressure and other cardiovascular diseases, as well as people with allergies can not eat crabs, because eating crabs will affect the body. Therefore, pay more attention so as not to cause harm to the body.