In our country, "drinking more hot water" is an extremely common "** method", and most children are taught not to drink raw water from an early age, why is this?
1. What are the dangers of drinking raw water?
The so-called "raw water" refers to water that has not been filtered and disinfected, including river water, stream water, well water, etc.
For some people, raw water is sweeter and tastes better than filtered drinking water, so they prefer to drink it directly.
However, with the improvement of people's awareness of health and safety, direct drinking of raw water is becoming more and more rare, and filtered water has entered thousands of households.
So, what are the dangers of drinking raw water directly?
First of all, raw water may contain pathogenic microorganisms.
In its natural state, rivers and streams cannot be used only by humans, and various animals must also rely on such water sources for survival, so the bacteria and viruses carried by them are very likely to enter the water.
In addition, with the long-term development of industrialized society, a large amount of production and domestic sewage is discharged into rivers, which also greatly aggravates the insecurity of natural water sources.
For example, in the past two years, Japan, the United Kingdom and other countries have been exposed to the discharge of nuclear sewage into the ocean, and how many residents near the sea are so frightened that they dare not even eat seafood, let alone drink raw water.
And in our country, "drinking more hot water" also has a historical origin.
During the War to Resist US Aggression and Aid Korea, the US military dropped a large number of unknown objects on the territory of China and engaged in bacteriological warfare on a large scale.
Secondly, there may be parasites and parasite eggs in the raw water.
Raw water that has not been sterilized and filtered may contain parasites or parasite eggs, such as roundworms, whipworms, hookworms, schistosomiasis, etc.
After being infected with parasites, it can cause anorexia and abdominal pain to damage body organs.
In the early years, because of people's weak awareness of hygiene, parasites abound in children, and raw water was one of them.
Frequent drinking of raw water may cause people to suffer from gastroenteritis and bacillary dysentery, which is very harmful to people's health.
2. Why can animals drink raw water?
Since humans can get sick or even die when they drink raw water, why are other animals living in the wild every day drinking raw water okay?
First of all, long-term drinking develops tolerance.
Wild animals have lived in nature for generations, and their most reliable source of water is natural river, lake or even seawater, so they have little choice.
In nature, "survival of the fittest", drinking raw water for a long time, is enough for their bodies to evolve the "secret**" that can fight against bacteria and other bad substances in raw water
For example, sea turtles can excrete excess salt from their bodies through "tears".
Secondly, raw water is just as harmful to animals at some point.
When human civilization was not yet developed, human beings also had to drink raw water to survive, even at the end of the last century and the beginning of this century, there were not a few Chinese people who drank well water directly, and even some people drank rainwater.
The reason is very simple, because there is no way, before the hot water bottle has not entered every household, boiling water is also a troublesome matter, and direct drinking water has only just come out.
However, drinking raw water does not mean that the harm of raw water did not exist in the past, and people will still get sick if they are not careful.
The same is true for animals.
There is no way for them to drink raw water, and there is no possibility that animals will not get sick at all if they drink raw water.
In 2012, Northwest A&F University conducted a research survey on the situation of wild animals suffering from parasites, and the results showed that they would also be infected by parasites, and if they did not accept **, they would feel the same pain and even put their lives in danger.
It's just that humans can't provide all of them with disinfected and filtered drinking water.
Human wisdom makes it easy for us to get clean water, but it is difficult for most animals, and they can only "survive the fittest, survival of the fittest", which is the law of nature.
Reference: Institute of Physics, Chinese Academy of Sciences "Why do humans need to filter the earth's water when they drink it, but other animals can drink it directly?!" 》
Beijing Science Center "I only know that Chinese drink hot water to "save lives"! 》
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