45-degree water doesn’t make people feel very hot, but why can 45-degree weather be so hot that it kills people?

45℃ water can also heat people to death, but people will not stay in 45℃ water for a long time. There are very few incidents where the temperature of 45℃ kills people. Of course, not many people will stay outside for a day in a temperature of 45℃.

The temperature exceeding the human body can cause heat to death. This is achieved by affecting the body's heat dissipation function. Humans are endothermic animals. The principle is that the body's heat production and heat dissipation are roughly equal. When the temperature is high, heat dissipation is slow, and the body's regulation reduces the body's heat production. In winter, when it is cold, heat dissipation is fast, and the body's regulation produces more heat. When the body temperature cannot be maintained at At normal levels or in balance (fever) at high levels, human body functions will be affected, and severe cases may lead to death.

When a person is exposed to high temperatures above 37°C or in water, the body's heat dissipation will be affected. The temperature of the internal organs will rise, and you will feel hot from the inside out. The reason is that the high temperature affects the metabolism of the internal organs. At the same time, The blood vessels on the surface of the human body dilate, and the blood flow to the corresponding internal organs will decrease. This is one of the reasons why some people faint when taking a high-temperature bath. At the same time, high body temperature will also increase blood sugar, affecting the sugar metabolism of the whole body. .

The so-called hot weather that kills people is more likely to cause heat stroke, which usually occurs in high-temperature and high-humidity environments. The human body's temperature regulation function is completely disrupted, which in turn causes the body's water and electrolyte disorders, leading to Organ damage and loss of function. This is a very dangerous disease related to the regulation of human body temperature and water and electrolytes. The fatality rate ranges from 20% to 70%. For patients over 50 years old, it can be as high as 80%, which is quite dangerous.

This often happens in rural areas, mostly due to spraying pesticides in tall corn fields and other places. Due to the transpiration of plants and the obstruction of plants and poor ventilation, human body cooling is affected, and some farmers are unable to identify it. The initial symptoms include profuse sweating, confusion, and other abnormalities. He endured the discomfort and continued working, causing him to faint. He was obscured by crops and difficult to be discovered by others. Finally, he died of heat stroke. In cities, this happens a lot due to the size of the city, mainly in some limited spaces with poor ventilation. Therefore, our country has formulated laws and regulations on working under high temperatures to enhance the protection of workers.

45℃ is already a relatively high temperature for the human body. Being exposed to a temperature higher than 45℃ for a long time will at least cause low-temperature burns. The so-called low-temperature burns generally refer to prolonged contact with hot water bottles and other objects with temperatures exceeding 45°C, which can cause edema in the dermal layer of the skin and other problems. If you stay in 45℃ water for a long time, it will at least cause extensive low-temperature burns, and it can still kill people, and this temperature is really not low for many people.