Enoki mushroom contains formaldehyde? Is drinking milk carcinogenic? Take stock of the May fake science one by one

Health-related news on the Internet is endless, but the true and false "science" makes it difficult to distinguish

Today, the reporter of Science and Technology Daily will take stock of these fake popular science rumors in May one by one to help you clear the fog and find the truth

Is drinking milk carcinogenic? Truth: Without reliable scientific evidence, milk is still a healthy food

The claim that "milk and dairy products cause cancer" has been widely circulated in the folk, and a recent paper titled "Dairy Intake of Chinese Adults Is Linked to Cancer Risk" seems to have "scientific" support

The study, which was conducted on a Chinese population, followed 500,000 Chinese for 11 years

At the same time, the above research data also pointed out the health benefits of drinking milk, such as promoting growth and development, but it seems that many netizens are only concerned about "Chinese drinking milk causes

"There have been studies on 'whether milk is carcinogenic' in the academic circles at home and abroad, and researchers generally believe that the benefits of drinking milk to the human body are the main ones, and this view occupies the absolute upper hand

Wang Huaqing believes that the key to a healthy diet lies in a balanced diet

Enoki mushroom contains formaldehyde? Truth: The pungent odor is produced by the mushroom itself

Enoki mushroom is a popular mushroom product, but recently the circle of friends has reported "popular science" articles

In this regard, Ban Litong, a professor at Tianjin Agricultural College, said in an interview with the Science and Technology Daily reporter that some citizens may smell a pungent smell when opening the packaging bag of Enoki mushrooms, which is not due to the addition of formaldehyde, but because of changes in temperature during transportation, resulting in the transfer of Enoki mushrooms from aerobic respiration to anaerobic respiration, which in turn produces some volatile aldehyde gases

Some netizens said that adding formaldehyde to Enoki mushrooms is for bleaching

According to the data, China's "Food Safety Law" and "Agricultural Product Quality and Safety Law" clearly stipulate that formaldehyde shall not be used

Chewing ability is not easy to suffer from Alzheimer's disease? Truth: Over-interpretation, there is no causal relationship between the two

Alzheimer's disease, commonly known as "Alzheimer's disease", is a chronic progressive brain disorder caused by damage to brain cells, which mainly affects the function of the brain, manifested as memory, daily living ability and other aspects of the disorder

Although chewing ability and Alzheimer's disease seem to be on par with each other, it seems that someone has really found a basis for

"The above study is only an epidemiological study, which can only show a correlation between chewing ability and Alzheimer's disease, but it cannot yet explain whether there is a causal relationship between the two, and its mechanism needs further verification

"Instead of just exercising your masticatory muscles to prevent Alzheimer's disease, start with

Zhou Yuying said that people who lack hobbies and have a boring and monotonous life are more likely to develop Alzheimer's disease, so environmental stimulation is very effective

Negative pressure wards make it difficult for patients to breathe? Truth: The pressure difference between inside and outside the ward is extremely small and does not cause any discomfort

In many news reports about the new crown pneumonia epidemic, a word
called "negative pressure ward" often appears.
In the process of treating patients with new crown pneumonia, the negative pressure ward has played an important role and can be described as a "hero"
in the fight against the epidemic.
However, because of the lack of understanding of such wards, some people only understand it literally, and then carry out "science popularization" on the Internet, saying that "negative pressure will cause patients to have difficulty breathing.
"
What are the facts?

"The negative pressure ward refers to the ward where the air pressure in the ward is lower than the air pressure outside the ward, which is mainly set up for patients with respiratory infectious diseases
.
" Wang Yimin, chief physician of the Department of Critical Care Medicine of Tianjin Teda Hospital, said in an interview with the Science and Technology Daily reporter that the conventional atmospheric pressure is 1.
013×105 pascals (pressure unit), while the air pressure of the negative pressure ward and the conventional atmospheric pressure is only 25 pascal of the air pressure difference
.
"This bit of air pressure difference is difficult for ordinary people to detect, and patients will not feel any discomfort
in the negative pressure ward.
"

Because the air pressure in the negative pressure ward is lower than the air pressure outside the ward, the air can only flow in one direction, so that when the medical staff enter and exit the ward, it can ensure that fresh air from the outside can flow into the ward, but the polluted air in the ward will not spread
outward.
The polluted air will not be discharged at will, but will be collected and discharged to a fixed place through a special pipeline, and then filtered and disinfected layer by layer to the
outside world.
(Edited by Li Chuang)