Recently, there have been reports on the Internet that “eat a crayfish calorie can only be consumed by running a half-marathon.†It is recommended that people eat crayfish no more than 10 at a time. As soon as the news came out, many netizens responded strongly: “How do you eat 10 meals?†“Scientific basis?†In response, the reporter consulted Xie Hua, deputy chief physician of Nutrition Department of Huadong Hospital, and learned that as a kind of aquatic products, Crayfish are not particularly high in calories, but they are also affected by cooking methods. The argument that one cannot eat more than 10 eggs is too one-sided. How high is the energy of each food, consumers can learn to look at the "Food Composition Table."
"Popular King" is the enemy of weight loss?
Crayfish went to the market again, but the "popular king" of this food circle is actually the enemy of weight loss? Recently, someone on the Internet said that the calorie content of 2 pounds of spicy crayfish is over 1200 calories, more than half of the calories one person needs a day. Want to consume more than 1200 calories intake, need to run more than 2 hours, walk 5 hours, which is equivalent to a 21 km half marathon. The article suggests that occasionally eating crayfish can solve the problem, but it is best not to exceed 10 at a time. Do not use it as a staple food, and do not recommend it as a main course during lunch and dinner. This argument allows netizens to "blast" it. A comment of more than one thousand praises: “Please give the scientific basis for eating 1200 calories for a crayfish. Is eating crawfish with a belt shell and soup, all eat it?†Others said: “No May only eat ten, the boss comes first."
Crayfish heat so high? Xiao Bian asked the deputy chief physician of the Department of Nutrition of Huadong Hospital, Xie Hua. Xie Hua introduced that the calories themselves are not higher than other aquatic products. How high is the energy of each food, consumers can check the "Food Composition Table."
Crayfish itself is not too hot
In the Chinese Food Composition Table 2017 Edition, there is no entry for crayfish, and the general crayfish is referred to as crawfish. Therefore, referring to the crayfish entry, the energy per 100 g of the edible portion is 93 kcal. . In other shrimps, the energy of the edible portion of the shrimp is 84 kcal per 100 g, the energy of the eatable portion of the shrimp is 96 kcal per 100 g, and the energy of the edible portion of the lobster is 100 kcal per 100 g. It can be seen that the calories themselves are within the normal range of shrimps.
It should be noted that the edible portion of the crawfish only accounts for 31% of the whole, and almost two-thirds of the portion is discarded, while the energy content of 93 kcal per 100 grams refers to the edible portion. In other words, if you buy 2 pounds of crayfish and weigh 1,000 grams, it does not mean that the energy of these crawfish has 930 kcal. Based on the proportion of 31% edible parts, the energy of 2 pounds of shelled crayfish is 288 kcal.
Of course, this is only the energy contained in the raw crayfish. In the cooking process of crayfish, oil, pepper, sugar, cooking wine, various spices, etc. are often added, and the heat of these ingredients is also counted in the final dish. In other words, in fact, the high-calorie "crime" is not in itself crayfish, but in the "taste", as long as it is fried, stir-fried, spicy and other cooking methods, even if it is based on other foods, it is not recommended to eat more .
Xie Hua pointed out that the large amount of crayfish consumed at one time is generally more likely to be caused by the rhabdomyolysis syndrome than by excessive energy intake. In recent years, many cases of rhabdomyolysis syndrome in Shanghai have occurred after the patients have consumed large amounts of crayfish. Although the cause and mechanism of skeletal muscle lysis syndrome caused by crayfish scientifically are still unknown and cannot be determined as food safety negligence, a large number of crayfish may have the risk of inducing rhabdomyolysis syndrome.
Rhabdomyolysis syndrome, also known as Huff disease, refers to a series of inherited or acquired diseases that affect the striated muscle cell membrane, membrane channels, and their energy supply. The striated muscle injury, changes in cell membrane integrity, leakage of cell contents, and more There is acute renal failure and metabolic disorders.
Previously, it was claimed that the “shrimp powder†of crayfish cleaning contained oxalic acid, which was the culprit in causing Huff disease. However, oxalic acid is widely found in foods. The content of oxalic acid in "washed shrimp powder" is not enough to cause much harm. The fact that the content of heavy metals in the crawfish body or the accumulation of certain drugs that can cause muscle lysis in the growth process is still inconclusive. There is also the view that those who develop rhabdomyolysis are severely allergic to crayfish because of their personal constitution.
Eating crayfish still needs to be appropriate
The former General Administration of Food and Drugs reminds consumers that self-cooking crayfish should be purchased from regular sources and not be self-harvested; do not eat wild crayfish, dead shrimp or abnormally-sensed crayfish; do not eat head and viscera of crayfish.
When consumers eat crayfish in restaurants, they must choose a regular health restaurant and request an invoice or receipt. When ordering the crayfish online, the valid qualifications of the feeding unit must be confirmed and the bills must be kept. Do not patronize street vendors or unlicensed business units.
Eat crayfish at once and increase the diversity of food. Do not eat crayfish. People who are allergic to crayfish should consciously resist the temptation of crayfish cuisine and avoid allergic food poisoning.
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