Crab meat in the protein, niacin, vitamin b12 content are very rich, other vitamin a, vitamin c, fat, carbohydrates, iron, phosphorus and other nutrients. Especially vitamin b12, 100 grams of crab meat within the vitamin b12 is higher than the recommended daily intake of nutrients per person, so it is usually easy to feel depressed, tired, or peripheral nerves will feel numbness, pain in the people, you can eat in moderation.
Although crab meat is nutritious, it contains high cholesterol, which is even more significant when added to crab yolk and crab paste, so people who are concerned about this (e.g., those suffering from gallstones, systemic lupus erythematosus, allergies, and gastrointestinal discomfort) may want to exercise restraint in consuming it to avoid affecting their health. In addition, there is the issue of calories, crab meat is very high in calories, if you want to control weight you have to pay attention to the amount of food!
According to traditional Chinese medicine, crab is cold and salty in nature, and should not be eaten by those who have cold hands and feet (especially women), or who are cold or weak. Or you can add more ginger, green onion, garlic and other spices when cooking, so that these hot ingredients to neutralize the cold properties of the crab. Or drink a cup of yellow sugar ginger tea after eating crabs to warm the stomach, remove the fishy, and drive away the cold. In addition, folk believe that before and after eating crabs should not eat cool fruits, such as persimmons, in fact, in order to avoid eating too much cold food again, resulting in the body cold and cause discomfort.
In addition to some of the previously mentioned scruples, there are also some things that should be noted when eating crabs. It is not advisable to eat crabs raw: generally we often eat crabs are living in the ocean sea crabs, in their armor, gills and intestines are covered with all kinds of bacteria, if these bacteria or parasites into the stomach, the light is to lead to illness, the heavier will cause poisoning or injuries to the internal organs, so before eating the crabs should be thoroughly rinsed out to steam or boiled way to boil through to ensure that you eat peace of mind.
Don't eat dead crabs: When crabs are captured, they often try to break free, resulting in an increase in lactic acid in the body, which leads to the rapid multiplication of bacteria in the crab's body and spreads to the crab meat after it dies. Bacteria will decompose the amino acids in the crab body, and then produce a harmful substance "histamine", causing allergic food poisoning; another possible substance is "histamine-like", which can cause vomiting, abdominal pain, diarrhea, so be careful when selecting.