Due to the epidemic of the new coronavirus in 2020, people now need to take "temperature measurement" when entering public places, and always beware of fever patients wandering in public places without knowing it. During this temperature measurement process, many people found that everyone's body temperature is relatively low, and they even suspected that temperature measurement gun had quality problems .
Temperature measurement has almost become everyone's daily
In fact, many times it is not a problem with the thermometer, but , but the human body itself, "changes" .
After research and investigation, scientists have confirmed that the human body temperature is constantly cooling, and 7 degrees Celsius may have become the limit that we cannot go back to . So, why is the temperature of the human body constantly decreasing? What is the advantage of reducing limits? What does this change mean? Next, let’s take a look together!
37 degrees will also become the "tears of the times"?
people's standard body temperature
To discuss the issue of body temperature reduction, first we need to understand how the current normal body temperature standard comes from. Generally speaking, the standard body temperature of is 37 degrees Celsius, which actually refers to the temperature of the armpit. It is proposed by German physician Carl Windrich.
In the 1850s, he collected underarm temperature data from tens of thousands of patients. After integration, found that the body temperature of people was concentrated between 36.2 degrees Celsius and 37.5 degrees Celsius, so he took the intermediate value of 37 degrees Celsius as the standard for normal body temperature of . Since then, the concept of a normal body temperature of 37 degrees Celsius has been deeply imprinted in everyone's mind.
German doctor Carl Windrich
But in fact, does 37 degrees Celsius really work for everyone? Obviously not, because according to modern medical observation, when the temperature of the armpit is 37 degrees Celsius, will already have many discomfort symptoms .
And it should be noted that the temperatures in various parts of the human body are different. For example, the oral temperature is generally between 36.3 degrees Celsius and 37.2 degrees Celsius, and the rectal temperature is between 36.6 degrees Celsius and 37.7 degrees Celsius.
Of course, according to observation, the body temperature of is also different during different time periods, and the average body temperature of women is generally higher than that of men .
Comparison of body temperature between men and women
To sum up, although body temperature has established standards, will still be affected by many factors . In addition, according to scientific research, human body temperature has been declining in recent years, and our body is indeed "continuously cool" without everyone's awareness.
Down-body temperature in human
In the above article, we mentioned that the temperatures of various parts of the human body vary. Therefore, when conducting a new round of census and research, scientists focused on human "core body temperature" .
Core body temperature refers to the deep temperature around the living organs
Research team at Stanford University in the United States compared the temperature reports of American soldiers 1800 years ago with the current data. then found that the average body temperature of men dropped from the average value of 37.2 degrees Celsius to 36.6 degrees Celsius , and there are only a handful of people who can reach 37 degrees Celsius.
In addition to the Stanford University research, the research team at the University of California in the United States has also announced their research results. It turned out that the research team had conducted temperature measurements and tracking of a primitive tribe in the Amazon jungle more than ten years ago, and found that the body temperature of these people also dropped from 37 degrees Celsius to 36.5 degrees Celsius .
Statistical diagram of body temperature reduction in human
Although these two studies target different groups of people, the results showed a problem without surprise, , that is, the body temperature of the human body is indeed falling continuously in . Moreover, according to the current research results, this downward trend does not mean to stop.
It can be seen from this that sometimes it is not because of the thermometer problem, but because of , our body temperature is indeed falling, but just that everyone has not noticed it. .So, what impact will the continuous decline in human body temperature have on our daily lives?
It turns out that the thermometer is really not malfunctioning!
The impact of body temperature drop
When it comes to the impact of body temperature drop, some people may subconsciously think that summer will be cooler, after all, the core temperature of the human body has dropped. But in fact, the increase in temperature compared to the temperature in is not considered as much as , so we will not feel very cool in summer because of the drop in body temperature.
So, what impact will the decrease in body temperature have?
The human body will also change unknowingly
First of all, the relationship between body temperature and immunity . Relevant data show that when the body temperature of is between 36 and 37 degrees Celsius, it can effectively protect the body , so that it can resist the attacks of some microorganisms. Moreover, the higher body temperature of will actually activate more immune cells in the human body, making it fight against the invading virus.
So when our body has symptoms of fever, it may be that the body is rescuing itself and activates immune cells to kill the virus by heating up.
The human body's inherent immune cells
In this way, a decrease in body temperature means that immunity will decline, . This situation means that people's resistance is no longer as good as decades ago .
and according to analysis, every 1 degree Celsius decrease in body temperature will not only reduce immunity, but also and basal metabolism will also decrease . If this is true, "lossing weight" may become more and more difficult.
Low body temperature is also the "culprit" of obesity
Of course, although the normal body temperature of the human body has changed a certain amount, is still far from the limit of hypothermia , so everyone does not need to panic because of this, worrying that they will suffer from "hypothermia" in the unknowing changes.
So, what is the limit for hypothermia? What kind of chain reaction will it cause?
Severe hypothermia can cause death
Generally speaking, hypothermia is classified based on the human core body temperature and can be divided into multiple levels of . The temperature limits in each level are different. For example, the mild one is between 32 degrees Celsius and 35 degrees Celsius, and the severe one is between 20 degrees Celsius and 28 degrees Celsius.
Since body temperature is regulated by temperature receptors scattered in the skin and internal carotid arteries, when it senses the temperature changes, it will transmit the signal to the hypothalamus, which increases the release of artophylamine and thyroxine . If it takes a long time, will also intensify the anaerobic metabolism of in the body, which will eventually lead to the emergence of "lactidemia".
Hazards of hypothermia
In addition, hypothermia will also affect multiple systems such as cardiovascular system, central nervous system , respiratory system, coagulation system, etc. . These systems will respond with the decrease in body temperature, thereby affecting the normal activities of the entire body.
From this point of view, body temperature reduction is not a good thing for humans. , especially in this era of virus-torn , it goes without saying how important immunity is. So, what exactly caused this abnormal change in human body temperature?
Schematic diagram of the immune process of cells
Reasons for the continuous decline of human body temperature
Scientists have put forward the following conjectures on this. The first type is believed to be the development of modern society and the improvement of medical level, which has caused the body temperature to continue to decrease . We mentioned in the previous article that the body's warming is conducive to activate immune cells and fighting invading viruses.
In the past, without sufficient medicine, everyone really could only rely on themselves to fight the virus. Now, when you just have a cold and fever symptoms, people will take immediately. In this case, the body seems to have no need to perform. You just need to hand over the drug .Therefore, when the medication is constantly taken, the body temperature of person will inevitably drop.
The drug has caused the human immune cells to be used for.
In addition, there is also the reason why modern people lack exercise . Nowadays, most people will never sit as long as they can lie down, and they will never go out to exercise if they can stay at home. In this case, the basal metabolism of humans actually decreases, and under the influence of the decrease in basal metabolism, the body temperature naturally decreases .
also has some external interventions, For example, in the past, no matter whether it is cold or hot, people could only rely on the body to adjust and respond to . Nowadays, when air conditioning is on in summer and heating is on in winter, our hypothalamus seems not to feel too much stimulation, and it is normal for us to become a little "dementia" over time.
Technology has changed the living standards and also affected the quality of human body
It is worth mentioning that although many scientists believe that a drop in body temperature is not a good thing, some scientists have taken a different approach. believes that a drop in body temperature may bring people "the blessing of longevity" .
It turns out that scientists used mice to conduct experiments and found that their life cycles at different temperatures are significantly different. The mice that survived in low temperature environments are significantly longer .
In addition, many organisms that live in low-temperature seawater all year round also show obvious longevity characteristics . In this case, people feel that lower body temperature may activate longevity genes and make them start working.
The lifespan of deep-sea fish is longer
So, seeing this, do you think it is good or bad to lower your body temperature?
