Yes, the protein content of crayfish is very high, and the meat is soft and easy to digest. It is an excellent food for people who are weak and need to be nursed back to health after illness. Shrimp meat is also rich in magnesium, zinc, iodine and selenium. Magnesium plays an important role in regulating heart activity and protecting cardiovascular system. It can reduce the cholesterol content in blood, prevent arteriosclerosis, dilate coronary artery, and help prevent hypertension and myocardial infarction. Crayfish contains astaxanthin, which is a strong antioxidant. In addition, crayfish can also be used as medicine, which can eliminate phlegm and relieve cough and promote postoperative wound healing.

Professor Fan Zhihong, Ph.D. in food science, said that crayfish itself is particularly resistant to pollution and is a kind of food with considerable pollution. Crayfish from unreliable sources are best eaten less or not. The nutritional value of crayfish is equivalent to that of other aquatic products. If you want to supplement protein, you can choose reliable aquatic products instead. If you like crayfish, you must know where it comes from when you buy it, and the waters should be clean enough. It is safer to buy farmed crayfish, so how to buy and eat crayfish safely?

1. Crayfish washed with shrimp powder often look very clean and bright. But corroded crayfish and shrimp tongs are easy to fall off. If there are few crayfish and shrimp tongs on the table, it is more likely to use shrimp washing powder, so crayfish with tongs should be eaten carefully.

2. See if crayfish live in clear water. At first glance, its back is bright red and clean, which is acceptable. Then, look at the fluff on its abdomen and the hair on its claws. If it is white and neat, it is basically raised in clear water.

3. Crayfish, after all, are aquatic animals that eat humus corpses, and bacteria and toxins will only accumulate in the body, so try to buy crayfish that have just grown up. When buying, you should know the skin color: the old lobster is red and black or red with metal gray, while the young lobster has a natural and healthy luster. Touch the shrimp shell with your hand again. The hard ones are old, and the elastic ones are just grown up and replaced. We should try to buy soft-shelled crayfish.

Crayfish in most restaurants are prepared for serving. Before eating crayfish, it is best to look at its body: if its tail is curled, it means it was alive before it was put into the pot. If the tail is straight, it means it was dead before it was put into the pot. Dead crayfish can not be eaten, which may lead to lead poisoning. In addition, lobster heads are easy to absorb heavy metals and bacteria, so it is best to remove their heads when eating.

5. Make your own crayfish. It is recommended to soak it in clear water for 2-3 hours, then scrub it clean and cook it at high temperature before eating.

6. Because the protein content of crayfish is very high, and the decay of protein will bring great harm to human health, it is best to eat crayfish as soon as it is cooked. Don't eat too much crayfish, because too much protein can easily lead to indigestion.