Why do scientists think that human body temperature is getting lower?

What is normal body temperature in humans? I believe that everyone will instinctively blurt out this question: 36 degrees! But few people have considered why the normal body temperature of humans is maintained at such a temperature.

In fact, before the middle of the 18th century, people did not have much concept of "normal body temperature", and they judged whether there was a difference in a person's body temperature based on the sense of touch, and of course this habit has continued to this day. Until the 19th century, Karl Ondrich conducted an experiment to measure the temperature of the armpits of 10,000 healthy adults hundreds of thousands of times, and based on the data obtained from the experiment, he proposed for the first time that 37 degrees is the average body temperature of humans. Since then, this temperature standard has been used as a scale and has become common knowledge in most people's minds.

But in reality, this common sense is not as solid as it seems, and in the century since, this temperature standard has been constantly questioned. Scientists analyzed 677423 body temperature data from 1860 to 2017 and found that the standard body temperature of humans is declining every 10 years. This means that the standard body temperature of modern people is no longer 37 degrees, but should be degrees.

Did the ancients keep "having a low-grade fever"?

Or there should be another question, that is, why should the human body temperature be constant at around 36 degrees? And not only humans, but most animals in nature have the ability to maintain temperature. There are two mainstream explanations for this:

In a constant temperature environment, the brain will function better and be smarter.

The ancestors of all animals on Earth have undergone a transition from aquatic to terrestrial, and constant temperature is the result of adapting to environmental changes.

Both explanations start from the purpose of animals (including humans) to maintain a constant body temperature, which is actually an instinct of living beings. Animals maintain a higher body temperature than the environment, which helps to enhance the ability of the animal to solubilize sugar, which is more conducive to promoting the activity of enzymes.

For animals, having these advantages means being more athletic and being able to capture prey more easily. Although humans are also animals, there is still some difference between the constant temperature of humans and the essence of those beasts. Studies have found that 36 degrees is actually the "highest limit" for humans to maintain enzyme activity in the body.

If the temperature is a few degrees higher than this, the enzymes in the human body will lose their activity. On the other hand, if the temperature drops by a few degrees but does not have much effect on the enzymes in the body, it can even make them more efficient.

In short, the body temperature of modern people is indeed declining, and the ancients have indeed been "having a low-grade fever". The most likely explanation is that from a microbiological point of view, modern humans differ greatly from ancient people. This is caused by vaccines and antibiotics, so our immune system is not as active as it used to be, and it doesn't need a higher body temperature to block out those bacteria.

Scientists also said that human body temperature does not decrease all the time, and there is a limit value for it, but the specific value is not known now!

This is because with the effects of global warming, which causes temperature changes around the world, so scientists will have such thoughts.

Because scientists have found in their studies that the temperature of human beings has been decreasing, and people nowadays rarely have high fevers and have been having low temperatures.

According to relevant statistics, it can be seen that the body temperature of human beings is slowly getting lower, which is why there is such a statement.

This is not a good thing, because the drop in human body temperature means that the human immunity will be further reduced, which will also lead to a further increase in the risk of illness in humans.

Whenever we mention the issue of body temperature, we always think that the normal body temperature of a human being is around 37 degrees. This was true 20 years ago, but with the continuous development of society, our material living standards are getting better and better, and people's physical health is getting worse and worse, which directly leads to the further reduction of body temperature for many people. In modern society, the normal body temperature of human beings has been reduced by about one degree, which means that the body temperature of about 36 degrees is the normal temperature of human beings.

1. The normal body temperature of human beings is no longer about 37 degrees.

When medical workers calculated the body temperature of human beings, they found that the body temperature of human beings was generally lower than 37 degrees, and some people even had a body temperature of just over 35 degrees. Prior to this, the normal body temperature of humans has always been around 37 degrees. When the human body temperature drops further, the various body functions of the human body are also affected by the body temperature.

Second, a lower body temperature is not a good thing.

The main reason why I say this is because for every degree of reduction in the body's body temperature, the person's immunity will drop by about 30%. When a person's body temperature does not reach 37 degrees, it means that the person's new metabolism is slow and there is a very high risk of disease. In addition, the drop in body temperature will further induce cardiovascular disease, which is the main cause of cardiovascular disease in many modern people.

Third, the drop in body temperature can also lead to further damage to our body.

When our body temperature drops below 37 degrees, the white blood cells in our body are further less effective at killing viruses. At the same time, when our body is infected, our immune system is not fully able to defend itself against viruses and bacteria. This is a very real problem, for us personally, we need to increase our activity as much as possible, in this way to improve our metabolism and thus make our body healthier.

I believe that a slight drop in body temperature is not only not harmful to the human body, but may also prolong life. This is mainly because the body temperature drops, the body's metabolism will also slow down, and the rate of cell aging and death will also be slowed down, so that people will live longer.

It's a blessing. Because of the serious industrial pollution now, the temperature is generally rising, and the human body temperature is low, but it can withstand high temperatures.

It's a curse, because the temperature of the human body is too low, which will cause the metabolism to slow down, and the lifespan will also be reduced, so it's a curse.

37 Body temperature is not a thing of the past, and the normal body temperature of the human body today is still 37 degrees.

Probably yes. Because human beings are still in the process of evolution, and the control of body temperature is also part of evolution, it is very likely that body temperature will decrease in the future.

It should be. Because the earth's environment is always changing, human beings are still evolving, and may become lower.

The body temperature of 37 degrees has not become a thing of the past, and the human body temperature is still fluctuating.

Coupled with the fact that more and more people are now installing air conditioners in their homes, air conditioners have indeed facilitated people's lives to some extent, but long-term use has caused people to have many health problems, such as the occurrence of air conditioning diseases. In the past, when there was no air conditioning, in different environments, people's thermoregulatory centers would constantly regulate the body's body temperature, so that people could adapt to different temperatures. But now, thanks to air conditioning, the human thermoregulatory center has become less sensitive, so that it is less easy to react, causing people's body temperature to drop.

Before the 19th century, most of the groups lived in a very harsh environment, so they often suffered from some infectious diseases or inflammation, and after the inflammation appeared, the body's immune system played a certain role in defense, and the temperature of the human body would increase. Nowadays, the living environment is getting better and better, and some diseases such as chronic diseases, viral infections, inflammation and other diseases have also decreased, so our body temperature will drop. The decrease in human body temperature is not the result of the influence of a certain factor, but is caused by the combined effect of multiple factors such as the surrounding environment and human living habits.

It may be that the environment in which humans live is constantly changing; Human beings should have been in a state of evolution, and many scientific studies have shown that human beings are in a state of improvement in terms of appearance, intelligence and physical fitness.

The continuous decline in human body temperature is mainly due to the lack of corresponding nutrients, which is also related to the speed of metabolism in our body; It's not that humans are evolving.

Summary. Hello, some people say it has to do with human evolution, some say it has to do with environmental changes......The research team at the University of California believes that the drop in body temperature is closely related to the physiological changes of human beings, and at present, there is no single factor that can explain the reason for the drop in human body temperature, which indicates that the drop in human body temperature may be the result of multiple factors.

Scientists have found that the temperature of the human body is decreasing, what is the reason?

Hello, some people say that it is related to human evolution, and some people say that it is related to environmental changes......The research team at the University of California believes that the drop in body temperature is closely related to the change of human physiology, and at present, there is no single factor that can explain the reason for the drop in human body temperature, which indicates that the drop in human body temperature may be the result of multiple factors.

Hope mine can help you.

lack of exercise; The ubiquitous air conditioner makes the thermoregulatory center no longer sensitive; The ubiquitous air conditioner makes the thermoregulatory center no longer sensitive;

Human body temperature has dropped in 170 years, which means that our immunity has weakened, greatly increasing the incidence of viruses, bacterial infections and cancer.

As we all know, body temperature is linked to basal metabolic rate, and for every 1 increase in body temperature, basal metabolism will increase by 13%. Low body temperature can mean poor metabolism. There are about 60 trillion cells in the human body, and the task of blood is to deliver nutrients and oxygen to these 60 trillion cells, and to carry away waste products such as carbon dioxide.

The white blood cells in the blood have an immune function, and the white blood cells can recognize foreign substances in the body and make corresponding immune responses. When the body temperature is high, the blood flow is faster, and the white blood cells can detect abnormalities in the body more quickly, killing pathogens in the cradle. Conversely, the basal metabolic rate is low, the body temperature drops, the blood flow rate slows down, and the efficiency of white blood cells decreases.

It is difficult for the white blood cells to detect the foreign body in the first place, and even if a foreign body is found, it is difficult to quickly gather other white blood cells to destroy the foreign body, causing the body to be easily infected with viruses and bacteria, causing diseases.

A drop in body temperature generally reflects an abnormality in basal metabolic rate. Of course, it is also necessary to consider whether there is a problem with the thermometer, if the body temperature drops when the thermometer is changed, then it is necessary to consider that it is caused by changes in the level of thyroid secretion.

If it is a high fever that causes the temperature to drop and is temporary, this situation does not need to be worried, it is a normal phenomenon, especially for infants and young children, and the body temperature regulation center is imperfect, and hypothermia is a normal phenomenon.

This is because human beings are adapting to the environment, and the temperature of the environment is constantly decreasing, so the human body temperature is also constantly decreasing.

Because once people get sick, they will take some medicine to lower their body temperature and reduce fever, and now the environment we are in is very convenient, resulting in the body's regulatory function becoming very weak.