Dachuan has not written an article in the past few days. The reason is very simple. Dachuan has also been infected with Yang...
has become Yang...
This time, Dachuan has discovered a more interesting phenomenon. 's own normal body temperature seems to have changed, and through Dachuan's observation, the normal body temperature of many people around him has also changed.
originally remembered that his normal body temperature should be 37°C, but now his normal body temperature is not even 37°C no matter how he measures it, only more than 36°C.
Many people's body temperature is already below 37℃
What's even more outrageous is that Dachuan also saw many people on the Internet who had a fever when their body temperature rose to a little over 37℃.
You need to know the body temperature of 37℃, but the standard normal body temperature of the human body is written in the textbook...
Some people have a fever when the temperature is a little over 37℃
So, is it the textbook that made a mistake, or is it caused by other reasons?
htmlHow does the standard body temperature of 937℃ come from?Here Dachuan needs to learn more about how the standard body temperature of 37℃ is obtained.
Back in the 19th century, a German doctor named Carl Wunderlich conducted statistical research on the armpit body temperature data of 25,000 normal adults and obtained a relatively reliable normal body temperature value, which is 37°C.
Normal body temperature of the human body
After Dr. Carr obtained this data, The standard human body temperature of 37°C was soon promoted around the world and has been used to this day...
37°C is no longer normal?
You may not believe it.
As Okawa mentioned at the beginning, although 37°C is the standard body temperature of the human body, some people will start to have a fever when their body temperature rises to a little over 37°C, and this is not an exception.
Netizen comments
If this is you, you can write a message in the comment area.
This actually illustrates a problem from the side. 37°C, the standard human body temperature, is no longer standard and normal for some people.
Of course, the redefined fever standard of may be able to better explain this problem.
Redefined fever standard
According to the redefined fever standard, human body temperature in the range of 37.3℃-38℃ is considered low fever, moderate fever is between 38.1℃-39℃, high fever is defined between 39.1℃-41℃, and a body temperature exceeding 41℃ is considered an ultra-high fever.
It is not difficult to see from this fever standard that html a body temperature of a little over 337℃ has indeed been defined as a fever...
Some people have a fever of a little over 37℃
All of this illustrates a problem. htmlThe body temperature of 337℃ is no longer normal. The value of the normal body temperature of the human body has dropped, and is still falling.
Human body temperature is constantly declining
In fact, regarding the issue of human body temperature falling, scientific researchers have noticed it as early as 2020 and have conducted detailed investigations and studies on it.
Back in 2020, researchers from Stanford University in the United States published a research report in the top international biology journal "ELIFE" .
The research report
published in "ELIFE" shows that over the past century or so, the normal body temperature of humans has been declining .
This is the conclusion reached by relevant researchers, , who compiled and analyzed more than 677,423 pieces of body temperature data collected since 1860.
Body temperature measurements by age observed in three different historical time periods
And, compared with people born in the 19th century and people born in the 21st century, the normal body temperatures of men and women were reduced by 0.59℃ and 0.32℃ respectively.
On average, almost every 10 years, the average body temperature of the human body will drop by about 0.03℃.
Every 10 years, the average body temperature of the human body drops by about 0.03℃
And it is worth mentioning that our body temperature is currently declining, and there is no sign of stopping.
According to researcher Parsonnet :
"Our body temperature will not drop to zero, because there is a limit to such a drop in body temperature, but we don't know where this limit is..."
Why does the human body temperature drop?
Seeing this, everyone must be confused. Why does our body temperature drop?
Human body temperature is declining
There are three main reasons for the decline in human body temperature.
The first aspect can be summarized as the enhancement of human body immunity .
The root cause of colds and fever is that our body produces a lot of heat in order to fight against the bacteria viruses in the body.
Therefore, fever is actually a basic immune response of our body, you can understand it as a kind of our own protection mechanism.
Fever is a basic immune response
But now, with the popularization of various vaccines and drugs, the immunity of all of us has been greatly improved, and the possibility of fever has also been reduced.
Correspondingly, the normal body temperature of the human body begins to slowly decrease.
Commonly used antipyretic drugs usage information
The second aspect is related to the decline of basal metabolism .
Compared with people 200 years ago, the lifestyle of modern people has completely changed. There are more people working in mental labor, and many people working in manual labor have also greatly reduced the intensity of physical labor.
Coupled with the popularity of electronic products, irregular schedules such as staying up late have increased.
The current situation of young people staying up late today, is it you?
This makes the basal metabolism of modern people almost plummet.
The slowdown of basal metabolism means that the body's heat production and consumption decrease. As a result, it is fed back to the body temperature and the body temperature will also drop.
The third aspect is related to greenhouse effect .
What I have to mention is the greenhouse effect. We live on the earth and need to communicate with the outside world at all times. Therefore, the impact of ambient temperature on human body temperature cannot be ignored.
Global temperature and carbon dioxide concentration change curve
Especially in the past 100 years or even in recent decades, I believe everyone should have a deep understanding. Summers are getting hotter and hotter, and winter comes later and later. In winter in the north, even the number of snowfalls has become single digits. This is all caused by the greenhouse effect.
Our own body temperature has also changed significantly over the years. Many people may vaguely remember that 's normal body temperature was still 37°C more than ten years ago, but just a dozen years later, it became 36.5°C when measured again.
The body temperature drops to 36.5℃
These are actually small changes made by our body to adapt to the new environment. There are many similar changes to
.
New blood vessels (median artery) growing in the arms
Scientific research has shown that many people have even evolved a brand new blood vessel in their arms . Such progress Changes are also changes made by the human body in order to adapt to the environment...
is written at the end
But having said that, although it is an indisputable fact that the human body temperature is declining, the impact of the decline in human body temperature is still unknown.
But judging from the reality, the drop in human body temperature does not seem to have much impact on our lives.
The normal body temperature of the human body is already less than 37℃
Therefore, when measuring your body temperature, please don’t panic if you find that your body temperature is low. It is purely normal.
But it is worth noting that if the body temperature exceeds 37.3℃, you should consider whether you have a fever based on your physical condition...
