The saying that "crabs and persimmons cannot be eaten together" has a long history. Zhang Zhan of the Eastern Jin Dynasty first wrote in "Health Preservation Essentials Collection": "Persimmons and crabs (eating together) will cause abdominal pain and diarrhea." . Huaguduo like us also grew up under the warnings of our parents, but there is no way of knowing whether it is true or not.

What on earth is going on? The editor will take you to study it in detail today.

Generally speaking, crabs cannot be eaten with persimmons because persimmons contain tannic acid. Under the action of tannic acid, crab meat containing high protein can easily solidify into lumps, that is, gastroliths, which are similar to stones and are not easily excreted. in vitro. The formation of gastroliths can cause inflammation of the gastrointestinal mucosa, ulcers or gastrointestinal obstruction. In severe cases, gastroliths may cause massive bleeding or severe obstruction of gastrointestinal ulcers, and may even require surgical treatment.

However, according to Professor Song Enfeng from the Department of Traditional Chinese Medicine of Hubei Provincial People's Hospital, "The key to whether gastric stones form or not lies in the quality of gastrointestinal function. If the function is good and peristalsis is normal, there will be no chance of coagulation, and there will be no chance of coagulation." "For people with poor gastrointestinal function, even if they don't add persimmons and crabs, they can eat a lot of foods rich in pectin and tannic acid on an empty stomach, such as persimmons, black dates, hawthorns, and pomegranates (the latter two are both delicious). Wen), etc., may also suffer from gastrolithiasis.

So, if your stomach is good, everything will be fine. If your stomach is not good, it may aggravate the condition.

If you still don’t believe it? Let's take a look at a small experiment: Protein combines with tannic acid to form a gel, and the gel-like clumps break down under the action of acid.

Preparation: crab, persimmon, artificial gastric juice, etc.

Step one: When the crab meat and persimmon juice are mixed together, the mixture will turn into a gel after about a minute. After letting it sit for 20 minutes, the mixture completely turned into a gel.

Step 2: Drop 2ml of artificial gastric juice into the mixture.

The experimental results show that the originally solidified glue material dissolved and returned to a liquid state. This shows that tannic acid protein can be dissolved under the action of gastric acid and gastric body peristalsis. Therefore, it is not entirely correct to say that eating the two together will produce stones.

“For people with normal gastrointestinal tracts, eating an appropriate amount of crabs and persimmons together will not cause physical discomfort. But for people with insufficient gastric acid secretion, this way of eating is not suitable and can easily cause indigestion. "And other problems will aggravate the condition," said Zhao Zeng, deputy director of the Food Safety Center of the Xi'an Nutrition Society. People with incomplete gastrointestinal function will experience various symptoms of discomfort. In severe cases, they may block the gastrointestinal tract, cause intestinal obstruction, and severe abdominal pain. Vomiting and other symptoms.

Zhao Zeng said that not only persimmons, but also fruits rich in tannic acid include oranges, plums, grapes, peaches, hawthorns, etc. Therefore, people with poor gastrointestinal problems should avoid eating this type of food at the same time as high-protein fish, shrimp, and crab, otherwise it will affect digestion. If you eat about 4 hours apart between the two foods, there won't be much impact.

Also, crabs have high cholesterol content. Patients with hyperlipidemia, diabetes, coronary heart disease, arteriosclerosis, hypertension and other cardiovascular and cerebrovascular diseases should eat less or not at all. Crabs, a high-protein food, can easily go bad, so be careful when choosing them. Otherwise, if you accidentally eat stale dead crabs, the consequences will be very serious.

Finally, the editor summarized the precautions for eating crabs, foodies will catch it:

1. Crabs must be steamed and cooked thoroughly. Do not eat raw crabs with animal carcasses or humus. For food.

2. Try to eat fresh crabs.

3. Crabs should be steamed and eaten immediately, do not store them.

4. In case you can’t finish it, the leftovers must be kept in a clean, cool and ventilated place. They must be returned to the pot and steamed thoroughly before eating.

"Foods are in conflict with each other" is not entirely credible. Eating too much of anything is harmful to your health. Instead of eating fearfully, it is better to have a balanced diet and strengthen exercise. A healthy body is life (chi) ( huo) the foundation.