Science in the Week: A Woman Lost Sensation in Her Right Hand After Taking a One-Hour Nap on Her Arm

1. Pickled cabbage buns are pickled in a pit

Recently, everyone should have been crazy about "Laotan Pickled Cabbage". According to the "3.15" evening show, the processing methods and food additives of the "pickled cabbage packages" in some brands of instant noodles do not meet safety standards. After reading the report, many netizens said that they "dare not eat pickled cabbage" in the future!

However, this is not the case. my country has a long history of sauerkraut production. The sauerkraut in different places varies according to the flavors of different regions, but the production methods are similar. Generally speaking, sauerkraut needs to produce a specific flavor through natural fermentation. During the fermentation process, a variety of microorganisms from the raw materials, containers and fermentation environment use the cabbage raw materials as carriers and reproduce and metabolize, thereby producing a variety of flavor substances, which is the source of the "sour fragrance".

The safety of sauerkraut mainly concerns its nitrite content. According to Jimei University's monitoring study of nitrite in the production process of western Fujian sauerkraut, the nitrite content is relatively high from the 3rd to the 13th day after the sauerkraut is made. After 20 days, it is basically safe for consumption.

Hotspot sources:

https://weibo.com/2258727970/LjSR4sk8c?refer_flag=1001030103_&type=comment

The editor has something to say: Why do I say it smells stinky when I eat it, but it also smells good?

2. A woman took a one-hour nap with her arm resting on her head and her right hand lost consciousness

Recently, in Changsha, Hunan, a woman took a nap with her arm as a pillow after cleaning her home. When she woke up an hour later, she found that her right hand had lost sensation. She was diagnosed with "radial nerve injury in the right upper limb."

The radial nerve is the innervation nerve of the extensor muscles of the upper arm and forearm. It is responsible for innervating the lateral and medial heads of the triceps, as well as the skin, joints, and all 12 muscles on the posterior side of the forearm. From a clinical point of view, its main function is motor control, but it is a mixed nerve that contains both motor and sensory functions. Therefore, when the radial nerve is damaged, it may cause a series of complications, such as the inability to supinate the forearm, the inability to flex and extend the fingers, etc. Many office workers or students like to sleep with their heads on their arms during their naps, which is likely to compress the upper arm and elbow joint. The radial nerve happens to be in this position, which can easily cause ischemia of the radial nerve over time, resulting in numbness of the hands.

Hotspot sources:

https://s.weibo.com/

The editor has something to say: The reason why my hands feel numb after waking up from a nap has been found

3. College students used internet celebrity eye drops and caused corneal damage

Recently, a woman in Shanghai had difficulty seeing clearly after using eye drops, accompanied by pain and tears. The woman was diagnosed with rhegmatogenous retinal detachment in both eyes, accompanied by redness and swelling. The cause was due to frequent use of a popular online eye drops that had exceeded the shelf life.

However, can eye drops that have not exceeded the shelf life be used casually? For friends who often use mobile phones and computers, staring at the screen for a long time can easily cause dry eyes, so many people choose to use eye drops to moisturize their eyes, but in fact, there are also some particularities in the use of eye drops. According to a study by Quzhou People's Hospital, the main way to abuse drugs is to arbitrarily increase the frequency and cycle of medication use. In addition, there are many typical cases of abuse of eye drops. The study also conducted a follow-up survey of 35 ophthalmic patients and found that an average of 5 eye drops were used at the same time; the average daily use was 16 times, which would increase the burden on the eyes. The reason is that frequent use of eye drops to flush the ocular surface dilutes the tears, resulting in a decrease in the adhesion ability of the mucin layer of tears, thereby reducing the stability of the tear film. The health of the tear film plays a key role in the stability of the ocular surface and the maintenance of corneal transparency. Therefore, the abuse of topical ophthalmic drugs is the main cause of corneal lesions.

Hotspot sources:

https://s.weibo.com/

The editor has something to say: "Moderation" is the best protection for the eyes

4. What behaviors are likely to damage the liver?

The liver is the largest detoxification organ in the human body and the organ with the most active metabolism. It has physiological functions such as detoxification, metabolism, bile secretion, immune defense, hematopoiesis, blood storage and blood volume regulation. For our liver, although it is powerful, super tolerant and painless, even if half of the liver is cut off, the remaining can maintain normal human physiological activities, but the liver is not "indestructible". According to the People's Daily, bad habits such as staying up late every day, excessive drinking, overeating, and irritability may cause damage to the liver, because the liver will be damaged by toxicity in the process of metabolizing alcohol, causing inflammatory necrosis. People who drink 50 to 70 grams of alcohol every day for a long time are at high risk of liver cancer. In addition, if too many calories are consumed, fat will accumulate in the liver and form fatty liver. At this time, if there are other diseases or drug stimulation, it may further lead to fatty hepatitis, cirrhosis, etc.

Hotspot sources:

https://weibo.com/

The editor has something to say: Everyone must take good care of their "little sweetheart"

In conclusion:

① As a traditional Chinese delicacy, sauerkraut is generally produced by natural fermentation in a family workshop, and the production mainly relies on experience. This production method determines that there is no unified standard for the quality of the product. Therefore, it is necessary to vigorously promote standardized processing in factories and adopt inoculation fermentation to produce sauerkraut with lower nitrite content while maintaining the traditional flavor of food;

② After the radial nerve is damaged, it can generally return to normal after standardized treatment. If the numbness persists, you should go to the hospital for treatment in time;

③ Most of the Internet celebrity products are exaggerated and described as miraculous, but in fact the effects are average. Especially for Internet celebrity products that involve your own health, you should still consume them rationally;

④ There are no nerves on the liver and it will not feel pain. Even 1/3~1/2 of the liver can maintain daily needs. Therefore, the early stage of liver disease is hidden and there are almost no obvious symptoms. As a result, many patients find that they are already in the late stage of liver disease. Therefore, regular maintenance and physical examinations are very important.

Source: Interesting Science

Image source: Tuchong Creative

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